Search found 30 matches

by Maria Roman 1A
Sat Jun 09, 2018 1:31 pm
Forum: Bond Lengths & Energies
Topic: Bond length
Replies: 5
Views: 283

Bond length

How can you tell when an atom has a longer bond?

an example: F, F^2-, F^2+
by Maria Roman 1A
Sat Jun 09, 2018 10:39 am
Forum: Empirical & Molecular Formulas
Topic: Empirical to molecular
Replies: 3
Views: 367

Empirical to molecular

How do you calculate the molecular formula when given the empirical?
by Maria Roman 1A
Wed Jun 06, 2018 11:15 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Tetrahedral and Square planar
Replies: 8
Views: 420

Re: Tetrahedral and Square planar

tetrahedral refers to the regions of electron density whereas square planar describes molecular shape
by Maria Roman 1A
Wed Jun 06, 2018 11:11 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Chelating complex
Replies: 7
Views: 187

Chelating complex

What does it mean to have a chelating complex?
by Maria Roman 1A
Sun Jun 03, 2018 5:08 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: homework problem 4.17 [ENDORSED]
Replies: 4
Views: 227

Re: homework problem 4.17 [ENDORSED]

This may help visualize the molecules' 180 angles

34382446_577373312640666_4886151733065023488_n.jpg
by Maria Roman 1A
Sun Jun 03, 2018 12:33 am
Forum: Hybridization
Topic: σ vs π bond tips thread
Replies: 5
Views: 177

Re: σ vs π bond tips thread

What do we need to know about the properties of sigma and pi bonds? I remember in class it had something to do with rotation, and that would break the pi bond, why would the rotation then not affect the sigma bond? Since a sigma bond consists of only 1 bond, it is able to rotate easily. However, pi...
by Maria Roman 1A
Sun Jun 03, 2018 12:30 am
Forum: Octet Exceptions
Topic: Radicals [ENDORSED]
Replies: 6
Views: 358

Re: Radicals [ENDORSED]

Kalsuda Lapborisuth 1B wrote:This might be slightly out of topic but why is the fact that radical is highly reactive makes radicals harmful?


One reason is because radicals have one odd electron that wants to be paired with another electron, so it'll take electrons from anything, including dna or amino acids.
by Maria Roman 1A
Sun Jun 03, 2018 12:24 am
Forum: Determining Molecular Shape (VSEPR)
Topic: How is this linear?
Replies: 2
Views: 101

Re: How is this linear?

This attachment helps visualize the molecule's linear shape

3508.gif
3508.gif (3.17 KiB) Viewed 87 times
by Maria Roman 1A
Wed May 30, 2018 11:28 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone pairs
Replies: 1
Views: 70

Lone pairs

Based on the shape of a molecule, how can you determine if the central atom must have lone pairs?
Do the angles between the molecules affect this?
by Maria Roman 1A
Wed May 23, 2018 10:43 pm
Forum: Octet Exceptions
Topic: He, Li and Be
Replies: 3
Views: 212

Re: He, Li and Be

generally the rule is that below period three, the elements will be exempt from the octet rule
by Maria Roman 1A
Wed May 23, 2018 10:42 pm
Forum: Dipole Moments
Topic: Non-polar and dipoles
Replies: 3
Views: 141

Re: Non-polar and dipoles

i believe in order for a molecule to have dipole moments it must be polar, indicating its opposite charges
by Maria Roman 1A
Wed May 23, 2018 10:41 pm
Forum: Lewis Structures
Topic: Homework Problem 3.65
Replies: 3
Views: 111

Re: Homework Problem 3.65

the double bonds in oxygen would give a more stable lewis structure
by Maria Roman 1A
Mon May 21, 2018 9:59 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizing Power
Replies: 2
Views: 338

Polarizing Power

How can you tell when an atom has higher polarizing power? What does it mean in relation to polarizability?
by Maria Roman 1A
Tue May 15, 2018 12:30 am
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge terms
Replies: 2
Views: 136

Formal Charge terms

What equation should we use to calculate formal charge and what do the terms mean?
by Maria Roman 1A
Tue May 15, 2018 12:29 am
Forum: Formal Charge and Oxidation Numbers
Topic: FORMAL CHARGE
Replies: 9
Views: 281

Re: FORMAL CHARGE

the lone pair electrons would be the dots
by Maria Roman 1A
Mon May 14, 2018 11:04 pm
Forum: Octet Exceptions
Topic: OCTET RULE [ENDORSED]
Replies: 10
Views: 356

Re: OCTET RULE [ENDORSED]

in simple terms, the octet rule is having the 8 electrons full to become more stable
by Maria Roman 1A
Mon May 14, 2018 9:41 pm
Forum: Octet Exceptions
Topic: Radicals [ENDORSED]
Replies: 6
Views: 358

Radicals [ENDORSED]

How can you tell if a species is a radical?
by Maria Roman 1A
Mon May 07, 2018 12:11 am
Forum: Trends in The Periodic Table
Topic: Trends to Know
Replies: 12
Views: 483

Re: Trends to Know

Trends to know would be the atomic radius, cation and anion trends, ionization energy, and electronegativity
by Maria Roman 1A
Mon May 07, 2018 12:06 am
Forum: Trends in The Periodic Table
Topic: Ground state and excited electrons [ENDORSED]
Replies: 1
Views: 101

Ground state and excited electrons [ENDORSED]

What's the difference between electrons in their ground state and excited electrons?
by Maria Roman 1A
Sat May 05, 2018 12:14 am
Forum: Trends in The Periodic Table
Topic: Ionic radius
Replies: 1
Views: 100

Ionic radius

how can you tell which anion is larger?

O- and S2-
by Maria Roman 1A
Sun Apr 29, 2018 11:31 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Explanation to the answer of the question 2.31
Replies: 4
Views: 135

Re: Explanation to the answer of the question 2.31

I believe there is no such thing as an orbital g
by Maria Roman 1A
Sun Apr 29, 2018 11:11 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: HELP hw problem 2.17 [ENDORSED]
Replies: 5
Views: 127

Re: HELP hw problem 2.17 [ENDORSED]

Figure 2.3 in the textbook can help with this. at L=0, for example, there is one orbital.
by Maria Roman 1A
Sun Apr 29, 2018 10:49 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Radius
Replies: 3
Views: 105

Radius

How can you tell if the radius of an atom has changed?
by Maria Roman 1A
Sun Apr 22, 2018 10:24 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic Spectroscopy [ENDORSED]
Replies: 1
Views: 101

Atomic Spectroscopy [ENDORSED]

How can you tell what spectroscopic series energy transition belongs to?
by Maria Roman 1A
Sun Apr 22, 2018 12:40 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Calculating energy [ENDORSED]
Replies: 3
Views: 131

Calculating energy [ENDORSED]

Problem 1.25 on the homework gives wavelength asking to find energy emitted by a photon. How would you calculate that?
by Maria Roman 1A
Fri Apr 20, 2018 4:49 pm
Forum: DeBroglie Equation
Topic: Wavelength and De Broglie Equation [ENDORSED]
Replies: 9
Views: 287

Wavelength and De Broglie Equation [ENDORSED]

Is calculating wavelength and calculating the De Broglie wavelength the same thing?
by Maria Roman 1A
Mon Apr 16, 2018 12:00 am
Forum: DeBroglie Equation
Topic: Calculating velocity
Replies: 5
Views: 225

Calculating velocity

When given wavelength, how would velocity be calculated?
by Maria Roman 1A
Sun Apr 15, 2018 11:58 pm
Forum: Properties of Electrons
Topic: Electromagnetic radiation
Replies: 3
Views: 166

Electromagnetic radiation

Why does electromagnetic radiation have the property of particles?
by Maria Roman 1A
Sun Apr 15, 2018 11:54 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg formula
Replies: 1
Views: 47

Rydberg formula

What is the Rydberg formula? A problem on the homework asks to use this formula to calculate wavelength radiation
by Maria Roman 1A
Sun Apr 15, 2018 11:49 pm
Forum: Properties of Light
Topic: Calculating wavelength [ENDORSED]
Replies: 4
Views: 96

Calculating wavelength [ENDORSED]

How would you arrange the formula to calculate wavelength when the frequency of light is given?

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