CHEM 1411 Recitation

Nomenclature

100

What is the name of the following compound?

CaO

Calcium Oxide

200

What is the formula for dinitrogen pentoxide?

N₂O₅

300

What is the name of this polyatomic ion? What is the name of its acid?

NO₃^-

Nitrate; Nitric acid

400

What is the formula for iron(III) sulfate?

Fe₂(SO₄)₃

500

What is the name of the following compound?

CoCl₂ ⋅ 6H₂O

Cobalt(II) chloride hexahydrate

Lewis Structures

100

The central atom in the Lewis structure of NH₃.

Nitrogen

200

The number of lone pairs on oxygen in H₂O.

two (2)

300

Which molecule violates the octet rule by having an incomplete octet on the central atom: BF₃ or CH₄?

BF₃

400

What is the formal charge on the central atom in H₃O⁺?

1+

500

How many resonance structures does NO₃^- have?

Three 3

VSEPR

100

What is the molecular geometry of CO₂?

Linear

200

What is the molecular geometry of NH₃?

Trigonal Pyramidal

300

What is the bond angle in a perfec tetrahedral molecule?

109.5

400

What is the molecular geometry of SF₄?

Seesaw

500

What is the molecular geometry of XeF₄?

Square Planar

Intermolecular Forces

100

What is the strongest intermolecular force present in CH₄?

London dispersion forces

200

Which intermolecular force is responsible for the high boiling point of water?

Hydrogen bonding

300

What is the strongest intermolecular force that NaCl undergoes?

Ion-X/Ion-dipole forces

400

What is the strongest intermolecular force present in HCl?

Dipole-Dipole interaction

500

Between HF and HCl, which molecule has the stronger intermolecular forces?

HF