Search found 106 matches

by Annie Ye
Sun Dec 08, 2019 6:36 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Oxoacid Strength
Replies: 6
Views: 53

Re: Oxoacid Strength

You would only look at bond lengths if it was with binary acids. For oxoacids, you would look at the electronegativity.
by Annie Ye
Sun Dec 08, 2019 6:34 pm
Forum: Lewis Acids & Bases
Topic: memorizing ligands
Replies: 5
Views: 80

Re: memorizing ligands

I also don't have a mnemonic but quizlet is actually very helpful! When memorizing CN, NC, SCN, and NCS, I realized that the complementing compound beginning with N will always begin with iso-. For example, CN is cyanate, and NC is isocyanate. SCN is thiocyanate, and NCS is isothiocyanate. Hope thi...
by Annie Ye
Sun Dec 08, 2019 6:34 pm
Forum: Calculating the pH of Salt Solutions
Topic: 6C.19
Replies: 3
Views: 51

Re: 6C.19

how do you compare between an oxoacid and a binary acid?
by Annie Ye
Sun Dec 08, 2019 6:32 pm
Forum: Naming
Topic: Abbreviations
Replies: 6
Views: 46

Re: Abbreviations

Yes the abbrevations are fine. e.g. en, dien, edta
by Annie Ye
Sun Dec 08, 2019 6:31 pm
Forum: Industrial Examples
Topic: Chemotherapy
Replies: 5
Views: 57

Re: Chemotherapy

Cisplatin is an example of a chemoterapy drug. It binds to the Guanine in DNA and stops replication. Transplatin is not effective because it only forms one bond with DNA.
by Annie Ye
Sun Dec 08, 2019 6:30 pm
Forum: Biological Examples
Topic: Carbon monoxide poisoning
Replies: 2
Views: 46

Re: Carbon monoxide poisoning

how does carbon monoxide poisoning affect hemoglobin?
by Annie Ye
Sun Dec 08, 2019 6:21 pm
Forum: General Science Questions
Topic: 50 post grade
Replies: 25
Views: 337

Re: 50 post grade

You have to have 50 posts by the end of the quarter.
by Annie Ye
Sun Dec 08, 2019 6:21 pm
Forum: Coordinate Covalent Bonds
Topic: Myoglobin
Replies: 5
Views: 293

Re: Myoglobin

hemoglobin is made up of 4 myoglobins. each myoglobin can attach to O2.
by Annie Ye
Sun Dec 08, 2019 6:19 pm
Forum: Calculating the pH of Salt Solutions
Topic: pH formula?
Replies: 21
Views: 402

Re: pH formula?

pH= -log(H+) you can also find pH from the equation 14= pOH+ pH if you were given the pOH.
by Annie Ye
Sun Dec 08, 2019 6:17 pm
Forum: Dipole Moments
Topic: dipole dipole
Replies: 3
Views: 27

Re: dipole dipole

Cynthia Rodas 4H wrote:Hydrogen bonds are stronger than dipole-dipole. The strength for intermolecular forces arranged from lowest to highest is London forces, dipole-dipole, H-bonding, and ion-dipole.

Why are hydrogen bonds stronger than dipole dipole?
by Annie Ye
Sun Dec 08, 2019 6:16 pm
Forum: Ionic & Covalent Bonds
Topic: ligands
Replies: 5
Views: 70

Re: ligands

Ligands are electron pair donors and they are Lewis bases. They donate electrons to the Lewis acid.
by Annie Ye
Sun Dec 08, 2019 6:15 pm
Forum: Coordinate Covalent Bonds
Topic: Cisplatin
Replies: 3
Views: 33

Re: Cisplatin

Cisplatin stops the DNA polymerase from replicating the DNA. Transplatin is weak because the DNA polymerase can knock it off.
by Annie Ye
Sun Dec 08, 2019 6:14 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 231
Views: 104692

Re: Saying Thank You to Dr. Lavelle

Dear Dr. Lavelle, Thank you for putting in so much effort in helping all of us succeed. I learned a lot in your class and I actually find chemistry interesting now. My experience was chemistry in high school was not the best but this class has definitely changed my mind. Thank you for all the review...
by Annie Ye
Sun Dec 08, 2019 6:12 pm
Forum: Octet Exceptions
Topic: Octet exception
Replies: 13
Views: 104

Re: Octet exception

Elements in 3p or higher have the octet exception because of the d orbital.
by Annie Ye
Sun Dec 08, 2019 6:11 pm
Forum: Resonance Structures
Topic: when there is resonance
Replies: 5
Views: 44

Re: when there is resonance

No, there has to be at least 3 atoms for resonance.
by Annie Ye
Sun Dec 08, 2019 6:10 pm
Forum: Polyprotic Acids & Bases
Topic: Polyprotic
Replies: 6
Views: 60

Re: Polyprotic

can bases be polyprotic? If so, what are the chemical equations representing that?
by Annie Ye
Sun Dec 08, 2019 6:08 pm
Forum: Bronsted Acids & Bases
Topic: Hydrogen Bonding
Replies: 10
Views: 65

Re: Hydrogen Bonding

hydrogen bonding is an intermolecular force between H- N, O, F
by Annie Ye
Sun Dec 08, 2019 6:04 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polar or Nonpolar
Replies: 3
Views: 30

Re: Polar or Nonpolar

Yes because the shape can determine if the dipole moments cancel out.
by Annie Ye
Sun Dec 08, 2019 6:03 pm
Forum: Student Social/Study Group
Topic: Week 10 Chemistry Community
Replies: 9
Views: 110

Re: Week 10 Chemistry Community

we must have 50 posts by the end of the quarter.
by Annie Ye
Sun Dec 08, 2019 5:59 pm
Forum: Student Social/Study Group
Topic: Class Grading
Replies: 36
Views: 524

Re: Class Grading

Cindy Adiwidjaja 1E wrote:I saw from previous years' posts that Lavelle also adds 10 points to every one's score out of 500. I do not know if this is still true, but this popped up a lot in Chemistry Community.

That would be great if he does curve the points!
by Annie Ye
Sun Dec 08, 2019 5:55 pm
Forum: Quantum Numbers and The H-Atom
Topic: n, l ,ml, ms
Replies: 13
Views: 125

Re: n, l ,ml, ms

When the spin is up, the ms is +1/2 and when the spin is down it is -1/2
by Annie Ye
Sun Dec 08, 2019 5:52 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: LDF
Replies: 4
Views: 35

Re: LDF

LDF exists between all molecules because electrons move randomly.
by Annie Ye
Sun Dec 08, 2019 5:48 pm
Forum: Hybridization
Topic: lone pairs in hybridization
Replies: 6
Views: 45

Re: lone pairs in hybridization

You would count the lone pairs as electron density. Bonds and lone pairs count in hybridization.
by Annie Ye
Sun Dec 08, 2019 5:46 pm
Forum: Bond Lengths & Energies
Topic: Curve
Replies: 4
Views: 64

Re: Curve

if there is a curve, will the curve be adjusted for only those who received 50% to get a C- or everyone's grades be curved?
by Annie Ye
Sun Dec 08, 2019 5:26 pm
Forum: Naming
Topic: bis,tris,tetrakis
Replies: 6
Views: 44

Re: bis,tris,tetrakis

You would use bis tris tetrakis for polydentate ligands for example (en)2 would be bisen.
by Annie Ye
Sun Dec 08, 2019 5:23 pm
Forum: Dipole Moments
Topic: Hydrogen bonds
Replies: 5
Views: 42

Hydrogen bonds

How do I count hydrogen bonds?
by Annie Ye
Sun Dec 08, 2019 5:22 pm
Forum: Dipole Moments
Topic: dipole dipole
Replies: 3
Views: 27

dipole dipole

Are hydrogen bonds stronger than dipole dipole?
by Annie Ye
Sun Dec 08, 2019 5:21 pm
Forum: Electronegativity
Topic: Electronegativity
Replies: 12
Views: 77

Re: Electronegativity

Electronegativity causes a bond to be stronger
by Annie Ye
Sun Dec 08, 2019 5:20 pm
Forum: Sigma & Pi Bonds
Topic: Sigma vs. Pi
Replies: 15
Views: 110

Re: Sigma vs. Pi

Sigma bonds are stronger because the orbitals overlap whereas for pi bonds, the orbitals can break when the molecule rotates.
by Annie Ye
Sun Dec 08, 2019 5:19 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Acid/Base Trends
Replies: 6
Views: 47

Re: Acid/Base Trends

The trend of acidity increases from left to right across the periodic table but it decreases going from top to bottom.
by Annie Ye
Sun Dec 08, 2019 5:17 pm
Forum: Properties of Light
Topic: Light acting like a wave
Replies: 4
Views: 42

Re: Light acting like a wave

In diffraction, light acts like a wave through the 2 slits because it causes diffraction patterns. The photoelectric effect would show light that acts like particles.
by Annie Ye
Sun Dec 08, 2019 5:15 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Negative pH
Replies: 5
Views: 34

Re: Negative pH

It means that the solution is very acidic.
by Annie Ye
Sun Dec 08, 2019 5:14 pm
Forum: Air Pollution & Acid Rain
Topic: acid rain
Replies: 2
Views: 46

Re: acid rain

Using clean coal instead of dirty coal can also reduce acid rain. It reduces the amount of sulfur produced.
by Annie Ye
Sun Dec 08, 2019 5:13 pm
Forum: Polyprotic Acids & Bases
Topic: Polyproptic Acids/Bases
Replies: 4
Views: 31

Re: Polyproptic Acids/Bases

H2SO4 would be polyprotic because it can donate more than one proton.
by Annie Ye
Sun Dec 08, 2019 5:12 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pH sig figs
Replies: 11
Views: 70

Re: pH sig figs

Yes, for pH you count after the decimal.
by Annie Ye
Sat Dec 07, 2019 2:57 pm
Forum: Bronsted Acids & Bases
Topic: weak bases
Replies: 2
Views: 29

weak bases

examples of some weak bases? How do we tell which base is weaker?
by Annie Ye
Sat Dec 07, 2019 9:02 am
Forum: Conjugate Acids & Bases
Topic: studying
Replies: 5
Views: 48

studying

What should I focus on when studying acids and bases? Are doing all the homework problems helpful in preparing me for the final?
by Annie Ye
Sat Dec 07, 2019 9:01 am
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strong Acids
Replies: 2
Views: 27

Re: Strong Acids

In determining the strength of the acid when bond lengths aren't applicable, then you would look at the electronegativity. CH3 or NH2?
by Annie Ye
Sat Dec 07, 2019 8:59 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Polydentates and Chelates
Replies: 4
Views: 24

Re: Polydentates and Chelates

Yes polydentates are considered to be chelating ligands. An example would be the porphyrin ligand.
by Annie Ye
Fri Dec 06, 2019 7:24 pm
Forum: Bronsted Acids & Bases
Topic: bronsted base and acid
Replies: 4
Views: 47

bronsted base and acid

How do I know if something is a Bronsted base or acid? How do they compare to Lewis base and acids?
by Annie Ye
Fri Dec 06, 2019 7:21 pm
Forum: Polyprotic Acids & Bases
Topic: bases
Replies: 2
Views: 32

bases

What are some examples of some polyprotic bases? How can they gain protons? What are the chemical reactions that show it?
by Annie Ye
Fri Dec 06, 2019 7:18 pm
Forum: Polyprotic Acids & Bases
Topic: polyprotic acids and bases
Replies: 2
Views: 30

polyprotic acids and bases

How to determine if whether something is polyprotic? Is NH4 polyprotic?
by Annie Ye
Thu Dec 05, 2019 1:27 pm
Forum: Lewis Acids & Bases
Topic: memorizing ligands
Replies: 5
Views: 80

memorizing ligands

Does anyone have a mnemonic to help memorize the ligands?
by Annie Ye
Thu Dec 05, 2019 1:26 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Acid/Base Trends
Replies: 6
Views: 47

Re: Acid/Base Trends

Why is HF a weaker acid than HI?
by Annie Ye
Thu Dec 05, 2019 1:25 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: using Ka and Pka
Replies: 4
Views: 27

using Ka and Pka

What do we use Ka and Pka for? What do they represent?
by Annie Ye
Thu Dec 05, 2019 1:24 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Acid Strength
Replies: 5
Views: 36

Re: Acid Strength

Alkaline means that it is basic.
by Annie Ye
Thu Dec 05, 2019 1:23 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: determining stronger acid
Replies: 1
Views: 22

determining stronger acid

How do we determine which acid is stronger given the chemical formula? Is there a periodic trend?
by Annie Ye
Thu Dec 05, 2019 1:21 pm
Forum: Lewis Acids & Bases
Topic: How to identify acid vs. base
Replies: 4
Views: 38

Re: How to identify acid vs. base

Lewis acid is the electron acceptor while the Lewis base is an electron donor. The Lewis base could be the ligands surrounding the Lewis acid.
by Annie Ye
Thu Dec 05, 2019 1:19 pm
Forum: Hybridization
Topic: hybridization of pi bonds
Replies: 1
Views: 8

hybridization of pi bonds

How do we determine the hybridization of pi bonds?
by Annie Ye
Thu Dec 05, 2019 1:16 pm
Forum: Polyprotic Acids & Bases
Topic: Polyprotic
Replies: 6
Views: 60

Polyprotic

How do we know if a chemical formula is more polyprotic? How do we determine the strength?
by Annie Ye
Thu Dec 05, 2019 1:14 pm
Forum: *Titrations & Titration Calculations
Topic: Titrations
Replies: 1
Views: 40

Titrations

How do we approach titration problems on the final? I am unsure of how the questions would be phrased on the test regarding titrations. What would we need to study regarding titrations?
by Annie Ye
Thu Dec 05, 2019 1:12 pm
Forum: Air Pollution & Acid Rain
Topic: reactions of acid rain
Replies: 1
Views: 45

reactions of acid rain

What are the chemical reactions that produce acid rain? How is acid rain reduced?
by Annie Ye
Thu Dec 05, 2019 1:09 pm
Forum: Conjugate Acids & Bases
Topic: conjugate acids and bases
Replies: 2
Views: 21

conjugate acids and bases

Are conjugate bases and acids always to the right of the chemical equation (products)?
Do conjugate bases and acids only form from bronstead acids and bases?
by Annie Ye
Thu Dec 05, 2019 1:06 pm
Forum: Amphoteric Compounds
Topic: how to determine amphoteric compounds
Replies: 1
Views: 25

how to determine amphoteric compounds

How do we determine if a compound is amphoteric if we are given the chemical formula?
by Annie Ye
Thu Dec 05, 2019 1:05 pm
Forum: Naming
Topic: Naming compounds
Replies: 1
Views: 18

Naming compounds

How do we name coordination compounds? Does the ligand always go first when naming the formula?
by Annie Ye
Mon Dec 02, 2019 3:57 pm
Forum: Calculating the pH of Salt Solutions
Topic: 6C.21
Replies: 1
Views: 22

6C.21

Suggest an explanation for the different strengths of (a) ace- tic acid and trichloroacetic acid; (b) acetic acid and formic acid.
by Annie Ye
Mon Dec 02, 2019 3:56 pm
Forum: Calculating the pH of Salt Solutions
Topic: 6C.19
Replies: 3
Views: 51

6C.19

Decide which acid in each of the following pairs is the
stronger and explain why: (a) HF or HCl; (b) HClO or HClO2; (c) HBrO2 or HClO2; (d) HClO4 or H3PO4; (e) HNO3 or HNO2; (f) H2CO3 or H2GeO3.
by Annie Ye
Mon Dec 02, 2019 3:56 pm
Forum: Calculating the pH of Salt Solutions
Topic: 6C.17
Replies: 1
Views: 23

6C.17

Which is the stronger base, the hypobromite ion, BrO2, or
morphine, C17H19O3N? Justify your answer.
by Annie Ye
Mon Dec 02, 2019 3:55 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: 6B.7
Replies: 1
Views: 20

6B.7

The pH of several solutions was measured in the research laboratories of a food company; convert each of the following pH values into the molar concentration of H3O1 ions: (a) 3.3 (the pH of sour orange juice); (b) 6.7 (the pH of a saliva sample); (c) 4.4 (the pH of beer); (d) 5.3 (the pH of a coffe...
by Annie Ye
Mon Dec 02, 2019 3:53 pm
Forum: Lewis Acids & Bases
Topic: 6A.11
Replies: 1
Views: 24

6A.11

Write the chemical equations of the two proton transfer equilibria that demonstrate the amphiprotic character of (a) HCO32; (b) HPO422. Identify the conjugate acid–base pairs in each case.
by Annie Ye
Mon Dec 02, 2019 3:52 pm
Forum: Lewis Acids & Bases
Topic: 6A.5
Replies: 1
Views: 23

6A.5

Identify (a) the Brønsted acid and base in the following reaction, and (b) the conjugate base and acid formed:
HNO3(aq) 1 HPO422(aq) ¡ NO32(aq) 1 H2PO42(aq)
by Annie Ye
Mon Dec 02, 2019 3:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2E.19
Replies: 1
Views: 39

2E.19

Predict the shapes and estimate the bond angles of (a) the thiosulfate ion, S2O322; (b) (CH3)2Be; (c) BH22; (d) SnCl2.
by Annie Ye
Mon Dec 02, 2019 3:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2E.17
Replies: 1
Views: 18

2E.17

Predict the bond angles at the central atom of the following molecules and ions: (a) ozone, O3; (b) azide ion, N32; (c) cyanate ion, CNO2; (d) hydronium ion, H3O1.
by Annie Ye
Mon Dec 02, 2019 3:48 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2E.13
Replies: 1
Views: 18

2E.13

Draw the Lewis structure, VSEPR formula, molecular shape, and bond angles for each of the following species: (a) I32; (b) POCl3; (c) IO32; (d) N2O.
by Annie Ye
Mon Dec 02, 2019 3:48 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2E.9
Replies: 2
Views: 20

2E.9

(a) What is the shape of an ICl3 molecule (iodine is the cen- tral atom)? (b) What value is expected for the ClICl bond angle?
by Annie Ye
Mon Dec 02, 2019 3:47 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2E.7
Replies: 2
Views: 17

2E.7

a) What is the shape of a thionyl chloride molecule, SOCl2? Sulfur is the central atom. (b) How many different OSCl bond angles are there in this molecule? (c) What values are expected for the OSCl and ClSCl bond angles?
by Annie Ye
Mon Dec 02, 2019 3:42 pm
Forum: Lewis Structures
Topic: 2D.7
Replies: 1
Views: 31

2D.7

Compounds having bonds with a high covalent character tend to be less soluble in water than similar compounds that have low covalent character. Use electronegativities to predict which of the following compounds is the more soluble in water: (a) AlCl3 or KCl; (b) MgO or BaO.
by Annie Ye
Mon Dec 02, 2019 3:42 pm
Forum: Lewis Structures
Topic: 2D.5
Replies: 2
Views: 26

2D.5

For each pair, determine which compound has bonds with greater ionic character: (a) HCl or HI; (b) CH4 or CF4; (c) CO2 or CS2.
by Annie Ye
Mon Dec 02, 2019 3:42 pm
Forum: Lewis Structures
Topic: 2D.3
Replies: 2
Views: 29

2D.3

Which of these compounds has bonds that are primarily ionic? (a) BBr3; (b) BaBr2; (c) BeBr2.
by Annie Ye
Mon Dec 02, 2019 3:41 pm
Forum: Lewis Structures
Topic: 2D.1
Replies: 1
Views: 24

2D.1

Place the following elements in order of increasing electro-
negativity: antimony, tin, selenium, and indium.
by Annie Ye
Mon Dec 02, 2019 3:37 pm
Forum: Hybridization
Topic: 2F.9
Replies: 1
Views: 21

2F.9

Identify the hybrid orbitals used by the phosphorus atom in each of the following species: (a) PCl41; (b) PCl62; (c) PCl5; (d) PCl3.
by Annie Ye
Sun Dec 01, 2019 10:39 pm
Forum: Hybridization
Topic: 2F.7
Replies: 2
Views: 20

2F.7

Identify the hybrid orbitals used by the atom in boldface red type in each of the following species: (a) BF3; (b) AsF3; (c) BrF3; (d) SeF31.
by Annie Ye
Sun Dec 01, 2019 10:39 pm
Forum: Hybridization
Topic: 2F.5
Replies: 4
Views: 27

2F.5

State the hybridization of the atom in boldface red type in each of the following molecules and ions: (a) BeCl2; (b) BH3; (c) BH42; (d) SiF4.
by Annie Ye
Sun Dec 01, 2019 10:39 pm
Forum: Hybridization
Topic: 2F.3
Replies: 1
Views: 20

2F.3

How many s-bonds and how many p-bonds are there in (a) H2S and (b) SO2?
by Annie Ye
Sun Dec 01, 2019 10:38 pm
Forum: Hybridization
Topic: 2F.1
Replies: 2
Views: 18

2F.1

State the relative orientations of each of the following hybrid
orbitals: (a) sp3; (b) sp; (c) sp3d2; (d) sp2.
by Annie Ye
Tue Nov 12, 2019 4:18 am
Forum: Dipole Moments
Topic: 3f.15
Replies: 3
Views: 40

3f.15

Explain the difference in the boiling points of AsF3 (63 8C) and AsF5 (253 8C).
by Annie Ye
Tue Nov 12, 2019 4:17 am
Forum: Dipole Moments
Topic: 3F.11
Replies: 3
Views: 32

3F.11

Which of the following molecules are likely to form hydro- gen bonds: (a) PH3; (b) HBr; (c) C2H4; (d) HNO2?
by Annie Ye
Tue Nov 12, 2019 4:17 am
Forum: Dipole Moments
Topic: 3F.5
Replies: 6
Views: 54

3F.5

Suggest, giving reasons, which substance in each of the fol- lowing pairs is likely to have the higher normal melting point (Lewis structures may help your arguments): (a) HCl or NaCl; (b) C2H5OC2H5 (diethyl ether) or C4H9OH (butanol); (c) CHI3 or CHF3; (d) C2H4 or CH3OH.
by Annie Ye
Tue Nov 12, 2019 4:16 am
Forum: Dipole Moments
Topic: 3F.3
Replies: 5
Views: 47

3F.3

For which of the following molecules will dipole–dipole inter- actions be important: (a) CH4; (b) CH3Cl; (c) CH2Cl2; (d) CHCl3; (e) CCl4?
by Annie Ye
Tue Nov 12, 2019 4:16 am
Forum: Dipole Moments
Topic: 3f.1
Replies: 3
Views: 29

3f.1

Identify the types of attractive intermolecular interactions that might arise between molecules of each of the following sub- stances: (a) NH2OH; (b) CBr4; (c) H2SeO4; (d) SO2.
by Annie Ye
Sat Nov 02, 2019 5:20 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 2A.9
Replies: 2
Views: 16

2A.9

Which M21 ions (where M is a metal) are predicted to have the following ground-state electron configurations: (a) [Ar]3d7; (b) [Ar]3d6; (c) [Kr]4d4; (d) [Kr]4d3?
by Annie Ye
Sat Nov 02, 2019 5:19 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 2A.5
Replies: 1
Views: 10

2A.5

Give the ground-state electron configuration expected for
each of the following ions: (a) Cu1; (b) Bi31; (c) Ga31; (d) Tl31.
by Annie Ye
Sat Nov 02, 2019 5:18 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 2A.3
Replies: 1
Views: 14

2A.3

Give the ground-state electron configuration expected for each of the following ions: (a) S22; (b) As31; (c) Ru31; (d) Ge21.
by Annie Ye
Sat Nov 02, 2019 5:17 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 2A.1
Replies: 1
Views: 14

2A.1

Give the number of valence electrons (including d electrons)
for each of the following elements: (a) Sb; (b) Si; (c) Mn; (d) B.
by Annie Ye
Sat Nov 02, 2019 5:15 pm
Forum: Properties of Light
Topic: Homework 1.3
Replies: 1
Views: 33

Homework 1.3

In each second, a certain lamp produces 2.4 3 1021 photons with a wavelength of 633 nm. How much power (in watts) is pro- duced as radiation at this wavelength (1W 5 1 J?s21)?
by Annie Ye
Sun Oct 27, 2019 9:25 pm
Forum: Lewis Structures
Topic: 2C.17
Replies: 1
Views: 21

2C.17

Select from each of the following pairs of Lewis structures the one that is likely to make the dominant contribution to a resonance hybrid. Explain your selection.
by Annie Ye
Sun Oct 27, 2019 9:23 pm
Forum: Lewis Structures
Topic: 2C.7
Replies: 2
Views: 18

2C.7

2C.7 Determine the numbers of electron pairs (both bonding and lone pairs) on the iodine atom in (a) ICl21; (b) ICl42; (c) ICl3; (d) ICl5.
by Annie Ye
Sun Oct 27, 2019 9:21 pm
Forum: Lewis Structures
Topic: 2C.1
Replies: 2
Views: 28

2C.1

2C.1 Which of the following species are radicals? (a) NO22; (b) CH3;
(c) OH; (d) CH2O.
by Annie Ye
Sun Oct 27, 2019 9:18 pm
Forum: Ionic & Covalent Bonds
Topic: 2A.23
Replies: 2
Views: 32

2A.23

2A.23 On the basis of the expected charges on the monatomic ions, give the chemical formula of each of the following compounds: (a) magnesium arsenide; (b) indium(III) sulfide; (c) aluminum hydride; (d) hydrogen telluride; (e) bismuth(III) fluoride.
by Annie Ye
Sun Oct 27, 2019 9:17 pm
Forum: Ionic & Covalent Bonds
Topic: 2A.21
Replies: 4
Views: 40

2A.21

2A.21 Give the ground-state electron configuration and number of unpaired electrons expected for each of the following ions: (a) Ca21; (b) In1; (c) Te22; (d) Ag1.
by Annie Ye
Sun Oct 20, 2019 10:35 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 1E.17
Replies: 2
Views: 39

1E.17

For each of the following ground-state atoms, predict the type of orbital (1s, 2p, 3d, 4f, etc.) from which an electron will be removed to form the 11 ion: (a) Ge; (b) Mn; (c) Ba
by Annie Ye
Sun Oct 20, 2019 10:32 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 1E.5
Replies: 1
Views: 23

1E.5

Which of the following statements are true for many electron atoms? If false, explain why. (a) The effective nuclear charge Zeffe is independent of the number of electrons present in an atom. (b) Electrons in an s-orbital are more effective than those in other orbitals at shielding other electrons f...
by Annie Ye
Sun Oct 20, 2019 10:30 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 1F.19
Replies: 3
Views: 27

1F.19

Why are s-block metals typically more reactive than p-block metals?
by Annie Ye
Sun Oct 20, 2019 10:29 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: 1F.3
Replies: 2
Views: 31

1F.3

Place the following ions in order of increasing ionic radius: S22, Cl2, P32.
by Annie Ye
Sun Oct 20, 2019 10:24 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: 1D.17
Replies: 1
Views: 18

1D.17

For each orbital listed in Exercise 1D.15, give the possible values of the magnetic quantum number.
by Annie Ye
Sun Oct 13, 2019 12:50 pm
Forum: Properties of Electrons
Topic: 1E.1
Replies: 2
Views: 34

1E.1

Which of the following increase when an electron in a lith- ium atom undergoes a transition from the 1s-orbital to a 2p-orbital? (a) Energy of the electron. (b) Value of n. (c) Value of l. (d) Radius of the atom. Which answers would be different for a hydrogen atom and in what way would they be diff...
by Annie Ye
Sun Oct 13, 2019 12:49 pm
Forum: Properties of Light
Topic: 1A.11
Replies: 3
Views: 33

1A.11

In the spectrum of atomic hydrogen, several lines are gen- erally classified together as belonging to a series (for example, Balmer series or Lyman series, as shown in Fig. 1A.10). What is common to the lines within a series that makes grouping them together logical?
by Annie Ye
Sun Oct 13, 2019 12:44 pm
Forum: Photoelectric Effect
Topic: 1B.25
Replies: 2
Views: 32

1B.25

What is the minimum uncertainty in the speed of an electron confined within a lead atom of diameter 350 pm? Model the atom as a one-dimensional box with a length equal to the diameter of the actual atom.
by Annie Ye
Sun Oct 13, 2019 12:42 pm
Forum: Photoelectric Effect
Topic: 1B.9
Replies: 2
Views: 52

1B.9

A lamp rated at 32 W (1 W 5 1 J?s21) emits violet light of wavelength 420 nm. How many photons of violet light can the lamp generate in 2.0 s? How many moles of photons are emitted in that time interval?
by Annie Ye
Sun Oct 13, 2019 12:39 pm
Forum: Properties of Light
Topic: 1A.3
Replies: 1
Views: 31

1A.3

Which of the following happens when the frequency of electromagnetic radiation decreases? Explain your reasoning. (a) The speed of the radiation decreases. (b) The wavelength of the radiation decreases. (c) The extent of the change in the electrical field at a given point decreases. (d) The energy o...

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