exam 2 review

Lewis Dot Structures

100

The total number of lone pairs in NCl₃ is

10

200

The number of lone electron pairs in the Cl₂ molecule is

6

300

What is the Lewis structure of ammonium

y'all come draw!

400

The total number of bonding electrons in a molecule of BrF₂ is

4

500

What are the formal charges in ClO₃^-

double bonded O: 0

single bonded O: -1

Cl: 0

naming compounds

100

what is the name of this compound?

CaO

calcium oxide

200

does the cation or the anion get the -ide when naming a compound?

anion

300

what is the name of this molecule Cl₂O

dichloride oxide

400

what is the name of this compound?

Fe₂S₃

iron(III) sulfide 

500

what is the formula for silver (III) chloride? 

AgCl₃

bonds/formulas

100

will a polar bond form between Cl and Cl? why?

no. because they have the same electronegativity

200

What type of chemical bond holds the atoms together within a water molecule?

polar covalent

300

Classify the O - H bond in CH3OH as ionic, polar covalent, or nonpolar covalent

polar covalent

400

Ketoprofen is an anti-inflammatory drug which is 75.59% C, 5.51% H, and 18.90% O. If the molecular
mass of ketoprofen is 254 g/mol, what is its molecular formula?

C₁₆H₁₄O₃

math

100

What is the molar mass of ammonium nitrate?

80.05 g/mol

200

The percent composition by mass of a compound is 76.0% C, 12.8% H, and 11.2% O. The molar mass
of this compound is 284.5 g/mol. What is the molecular formula of the compound?

C₁₈H₃₆O₂

300

What is the mass percent oxygen in copper(II) sulfate pentahydrate

57.7% Oxygen

misc

100

What is the ground-state electron configuration of a cobalt atom?

[Ar] 4s² 3d⁷

200

what does it mean to be isoelectronic?

species with identical electron configurations to the noble gas to the right

300

Many of the periodic table trends can be explained using Coulomb's law, what is Coulomb's law?

The force (f) between the two charged objects (Q1 and Q2) is directly proportional to the product of the two charges and inversely proportional to the distance (d) between the objects squared. (like charges repele, unlike charges attract)

400

What ion would have the ground-state electron configuration [Ar]3d ¹⁰

Zn²⁺ or Cu¹⁺

500

what is the range m_l can be?

-L to +L

polyatomic ions

100

phosphate

PO₄^3-

200

ammonium

NH₄⁺

300

carbonate

CO₃^2-

400

SO₄^2-

sulfate

500

HCO₃^-

bicarbonate