Search found 19 matches

by Enzo_1I
Sun Jun 03, 2018 10:58 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: AXE formula
Replies: 20
Views: 1237

Re: AXE formula

From what i understand it is necessary to know the shape that corresponds to the formula. This means memorizing which formulas are associated to which shape.
by Enzo_1I
Sun Jun 03, 2018 10:52 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal charge purpose
Replies: 40
Views: 1450

Re: Formal charge purpose

For a molecules lewis structure, it is best to find the most stable version. This is determined by finding the lowest energy of the molecule, which is just making the Formal charge equal to zero.
by Enzo_1I
Sun Jun 03, 2018 10:42 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lewis Structure and Molecular Shape
Replies: 3
Views: 99

Re: Lewis Structure and Molecular Shape

Yes. Since VSEPR is valence shell electron pair repulsion, only valence shell electrons determine shape by electron pair repulsion around the molecules central atom.
by Enzo_1I
Fri May 25, 2018 6:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular geometry vs. shape [ENDORSED]
Replies: 1
Views: 131

Molecular geometry vs. shape [ENDORSED]

What Is the difference between a molecules geometry and a molecules shape?
by Enzo_1I
Fri May 25, 2018 4:47 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angle
Replies: 6
Views: 211

Bond Angle

How do I determine bond angle for a molecule?
by Enzo_1I
Fri May 25, 2018 4:37 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizing power
Replies: 10
Views: 546

Re: Polarizing power

Polarizing power is used to refer to the ability of a cation to distort an anion. while polarizability refers to the tendency for an anion to become polarized by a cation.
by Enzo_1I
Sun May 20, 2018 10:03 pm
Forum: Lewis Structures
Topic: Radicals
Replies: 1
Views: 74

Radicals

For a radical, how to do I determine on what atom in a lewis structure to place an unpaired electron.
by Enzo_1I
Sun May 20, 2018 9:50 pm
Forum: Lewis Structures
Topic: Expanded octets
Replies: 2
Views: 82

Expanded octets

What makes the elements in the 3rd row and below able to have an expanded octet? And what determines how many electrons an atom can hold if it has an expanded octet?
by Enzo_1I
Sun May 20, 2018 9:43 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Why don't we find the formal charge of Hydrogen?
Replies: 3
Views: 182

Re: Why don't we find the formal charge of Hydrogen?

I think it is because the formal charge will always be zero since there is one valence electron and when there is a single bond with another atom, the hydrogen formal charge becomes zero because hydrogen only needs two electrons to be stable.
by Enzo_1I
Sun May 13, 2018 11:15 pm
Forum: Octet Exceptions
Topic: OCTET RULE [ENDORSED]
Replies: 10
Views: 356

Re: OCTET RULE [ENDORSED]

it should be noted that there are exceptions to the octet rule. For example, Hydrogen is most stable when it has 2 electrons in its valence shell.
by Enzo_1I
Sun May 13, 2018 11:07 pm
Forum: Lewis Structures
Topic: KCl Lewis formula
Replies: 6
Views: 533

Re: KCl Lewis formula

To determine if they share electrons, you could look at the periodic table and see if your compound is made up of two nonmetals. If it is then it shares electrons, since covalent bonds occurs with non metallic atoms.
by Enzo_1I
Sun May 13, 2018 10:46 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Bonds
Replies: 4
Views: 305

Re: Bonds

because when there are multiple bonds, the bonding electrons pull on the center nucleus more than single bonds, which pulls atoms closer to each other.
by Enzo_1I
Sun May 13, 2018 10:28 pm
Forum: Lewis Structures
Topic: KCl Lewis formula
Replies: 6
Views: 533

Re: KCl Lewis formula

Because when K and Cl bond, an Ionic bond forms. K will transfers its valence electrons to Cl. If it was a covalent bond, they would share electrons.
by Enzo_1I
Sun May 06, 2018 11:00 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: midterm Q.7b [ENDORSED]
Replies: 3
Views: 151

midterm Q.7b [ENDORSED]

What is the significance/origin of the negative sign in En= -hR/n2 ?
why is the answer "E infinity = 0 " ? I don't understand how this relates to the origin of the negative sign.
by Enzo_1I
Sun May 06, 2018 9:08 pm
Forum: Photoelectric Effect
Topic: Intensity of Photon
Replies: 8
Views: 345

Re: Intensity of Photon

Intensity is the amount of photons (light) emitted in the experiment.
by Enzo_1I
Sun May 06, 2018 9:04 pm
Forum: Trends in The Periodic Table
Topic: Atomic radii and ionization energy
Replies: 1
Views: 83

Atomic radii and ionization energy

Why does atomic radii decrease across a period, while ionization increases across a period ?
by Enzo_1I
Sun Apr 22, 2018 11:33 pm
Forum: Empirical & Molecular Formulas
Topic: Test 1 Question 7
Replies: 3
Views: 259

Re: Test 1 Question 7

Since you're trying to find the percent yield for this sample, you need to use (actual yield/ theoretical yield ) x 100%. The problem gives you the actual yield (7.84 grams), so you need to find the theoretical yield which should be around 8.11 grams. Then you can just plug in those number into the ...
by Enzo_1I
Sun Apr 22, 2018 11:16 pm
Forum: Photoelectric Effect
Topic: 1.33 Part D
Replies: 2
Views: 114

Re: 1.33 Part D

To find the region, you can use the electromagnetic spectrum to determine which wavelength it will fall under.
by Enzo_1I
Sun Apr 22, 2018 10:53 pm
Forum: DeBroglie Equation
Topic: Determining measurable wavelike properties
Replies: 1
Views: 82

Determining measurable wavelike properties

When using the De Broglie Equation to determine if an object has any measurable wavelike properties, at what magnitude is an object's wave considered not having wavelike properties?

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