What group (G) and period (P) does the element molybdenum (Mo) belong to?

A) G = 5, P = 6

B) G = 6, P = 6

C) G = 6, P = 4

D) G = 6, P = 5

E) G = 5, P = 5

D) G = 6, P = 5

Which of the following elements would be chemically similar to calcium (Ca)?

A) K

B) Sr

C) Sc

D) SE) Ga

B) Sr

Which of the following is NOT a metalloid?

A) Pb

B) B

C) Ge

D) Sb

E) Te

A) Pb

Which of the following elements is NOT a metal?

A) arsenic

B) indium

C) iridium

D) lithium

E) lutetium

A) arsenic

Which of the following is a main group element?

A) Yttrium

B) Osmium

C) Holmium

D) Californium

E) Bismuth

E) Bismuth

Which of the following is an alkaline earth metal?

A) Rubidium

B) Beryllium

C) Iridium

D) Americium

E) Phosphorous

B) Beryllium

Which periodic trend quantifies the amount of energy required to remove an electron from a neutral, gaseous atom?

A) Atomic Radius

B) Ionization Energy

C) Ionic Radius

D) Electron Affinity

E) Electronegativity

B) Ionization Energy

Which of the following transition metals would be expected to have the smallest atomic radius?

A) Yttrium (Y)

B) Zirconium (Zr)

C) Niobium (Nb)

D) Technetium (Tc)

E) Ruthenium (Ru)

E) Ruthenium (Ru)

Rank the following atoms in order of increasing first ionization energies (i.e., lowest to highest): Rb, F, Mg, B, N.

A) F < N < B < Mg < Rb

B) Rb < Mg < F < N < B

C) Mg < Rb < F < N < B

D) Rb < Mg < B < N < F

E) Rb > B > N > F > Mg

D) Rb < Mg < B < N < F

Rank the following atoms in order of increasing size (i.e., smallest to largest): Li, Al, Be, Ba, O.

A) Li < Al < Be < Ba < O

B) Ba < Al < Li < Be < OC) Li < Be < O < Al < Ba

D) O < Be < Li < Al < Ba

E) O < Li < Be < Ba < Al

D) O < Be < Li < Al < Ba

Predict the chemical formula for the ionic compound formed by Au³⁺ and HSO₃⁻

Au(HSO₃)₃

Predict the chemical formula for the ionic compound formed by Cu²⁺ and P³⁻

Cu₃P₂

Predict the chemical formula for the ionic compound formed by the elements Ag and O

Ag₂O

Predict the chemical formula for the ionic compound formed by the elements Ba and S

BaS

What is the formula of a compound containing Al³⁺ and S²⁻ ions?

A) Al₂S₃

B) Al₂S

C) AlS₃

D) Al₃S₂

A) Al₂S₃

Classify the following compounds as ionic or covalent: BaO, Fe₂O₃, ZnO.

A) Covalent, covalent, covalent.

B) Ionic, ionic, covalent.

C) Ionic, covalent, covalent.

D) Ionic, Ionic, Ionic.

D) Ionic, Ionic, Ionic.

Which of the following compounds exhibits both ionic and covalent bonding?

A) Cl₂O₇

B) KCl

C) KNO₃

D) N₂O₄

C) KNO₃

Which of the following is best classified as a covalent compound?A) Sr₃N₂

B) N₂O₅

C) Li₃N

D) AlN

B) N₂O₅

Which of the following compounds does NOT exhibit covalent bonding?

A) CO₂

B) COC) CoCl₂

D) HCOOH

E) Na₂CO₃

C) CoCl₂

Which of the following is a molecular compound?

A) P₄

B) BaBr₂

C) N₂O

D) CaO

E) Ag

C) N₂O

Sodium bicarbonate (baking soda, NaHCO₃) is used to deodorize refrigerators. What kind of bonding does this compound exhibit?

A) Ionic only

B) Covalent only

C) Both ionic and covalent

D) Metallic only

C) Both ionic and covalent

The compound NaBr is:

A) Ionic

B) Polar covalent

C) Nonpolar covalent

D) Metallic

E) Not enough info

A) Ionic

Which of the following is an example of an ionic bond?

A) K - F

B) C - H

C) Kr - H

D) C - F

A) K - F

What is the correct IUPAC name for Ag₂S?

silver sulfide

What is the correct IUPAC name for AlN?

aluminum nitride

What is the correct IUPAC name for BaS?

barium sulfide

What is the correct IUPAC name for K₂O

potassium oxide

What is the correct IUPAC name for MgF₂?

magnesium fluoride

What is the correct IUPAC name for Au₂O₃?

gold(III) oxide

What is the correct IUPAC name for CrCl₂?

chromium(II)chloride

What is the correct IUPAC name for CrCl₂?

chromium(II) chloride

What is the correct IUPAC name for FeCl₃?

iron(III) chloride

What is the correct IUPAC name for MnF₃?

manganese(III) fluoride

What is the correct IUPAC name for SnS₂?

tin(IV)sulfide

What is the correct IUPAC name for AlPO₄?

aluminum phosphate

What is the correct IUPAC name for Ca(NO₃)₂?

calcium nitrate

What is the correct IUPAC name for Li₃PO₄?

lithium phosphate

What is the correct IUPAC name for Na₂SO₃?

sodium sulfite

What is the correct IUPAC name for Co₂(SO₄)₃?

cobalt(III) sulfate

What is the correct IUPAC name for Fe(HSO₄)₃?

iron(III) hydrogen sulfate

What is the correct IUPAC name for SnSO₄?

tin(II) sulfate

What is the correct IUPAC name for CuClO₃?

copper(I) chlorate

What is the correct IUPAC name for Cr₂(CO₃)₃?

chromium(III) carbonate

What is the correct IUPAC name for LiOH?

lithium hydroxide

What is the correct IUPAC name for IF₅?

iodine pentafluoride

What is the correct IUPAC name for PBr₃?

phosphorus tribromide

What is the correct IUPAC name for SCl₂?

sulfur dichloride

What is the correct IUPAC name for SiCl₄?

silicon tetrachloride

What is the correct IUPAC name for S₂F₈?

disulfur octafluoride

Write the chemical formula for the chlorite ion

ClO₂⁻

Write the chemical formula for the nitrate ionNO³⁻

NO₃⁻

Write the chemical formula for ammonium hydroxide

NH₄OH

Write the chemical formula for calcium chloride

CaCl₂

Write the chemical formula for chromium(III) phosphate

CrPO₄

Write the chemical formula for cobalt(II) hydrogen carbonate

Co(HCO₃)₂

Write the chemical formula for copper(I) hydroxide

CuOH

Write the chemical formula for iron(III) oxideFe₂O₃

Fe₂O₃

Write the chemical formula for lead(II) nitrate

Pb(NO₃)₂

Write the chemical formula for potassium hydrogen carbonate

KHCO₃

Write the chemical formula for silver chloride

AgCl

Write the chemical formula for zinc nitrate

Zn(NO₃)₂

Write the chemical formula for carbon disulfide

CS₂

Write the chemical formula for disulfur decafluoride

S₂F₁₀

Write the chemical formula for phosphorus trihydride

PH₃

Write the chemical formula for sulfur dioxide

SO₂

Determine the correct formula for chromium(II) nitrite.

A) CrNO₂

B) Cr₂NO₂

C) Cr(NO₂)₂

D) Cr₃(NO₂)₂

C) Cr(NO₂)₂

Determine the correct formula for manganese(II) fluoride.

A) MnF

B) MnF₂

C) MnF₃

D) Mn₂F

B) MnF₂

Determine the correct formula for titanium(IV) chloride.

A) TiCl₂

B) Ti₄Cl

C) Ti₂Cl₄

D) TiCl₄

D) TiCl₄

Which has the correct name-formula combination?

A) Iron(II) nitride - FeN

B) Nickel(II) oxide - NiO₂

C) Titanium(IV) phosphide - TiP

D) Manganese(II) sulfide - MnS

D) Manganese(II) sulfide - MnS

Which has the incorrect name-formula combination?

A) Iron(III) fluoride - FeF₃

B) Cobalt(II) oxide - CoO

C) Copper(I) sulfide - CuS

D) Chromium(II) bromide - CrBr₂

C) Copper(I) sulfide - CuS

Which has the incorrect name-formula combination?

A) Chromium(II) sulfate - CrSO₄

B) Cobalt(III) nitrate - Co(NO₃)₂

C) Nickel(II) nitrite - Ni(NO₂)₂

D) Manganese(III) sulfite - Mn₂(SO₃)₃

B) Cobalt(III) nitrate - Co(NO₃)₂

Which of the following is the correct Lewis symbol for a neutral atom of Mg?

A) see problem image

B) see problem image

C) see problem image

D) see problem image

B) see problem image

Which of the following is the correct Lewis symbol for the calcium ion?

A) see problem image

B) see problem image

C) see problem image

D) see problem image

B) see problem image

Which of the following is the correct Lewis symbol for the nitride ion?

A) see problem image

B) see problem image

C) see problem image

D) see problem image

C) see problem image

Which of the following is the correct Lewis symbol for the nitride ion?

A) see problem image

B) see problem image

C) see problem image

D) see problem image

C) see problem image

Identify which of the following molecules has a double bond.

A) O₂

B) H₂

C) Br₂

D) HF

A) O₂

Draw the Lewis structure of HF. Please place the elements in the order that they are written.

Draw the Lewis structure of methane (CH₄).

Draw the Lewis structure of NF₃.

Determine the number of valence electrons in CH₂Cl₂ and then draw the corresponding Lewis structure.

A) 23

B) 20

C) 16

D) 22

E) 24

B) 20

Determine the number of valence electrons in CH₂Cl₂ and then draw the corresponding Lewis structure.

A) 23

B) 20

C) 16

D) 22

E) 24

B) 20

Determine the number of valence electrons in SiF₄ and then draw the corresponding Lewis structure.

C) 32

The Lewis structure for OCl₂ shown below is incorrect. Starting from this structure, complete the correct structure.

Determine the number of valence electrons in NH₂OH and then draw the corresponding Lewis structure.

A) 16

B) 14

C) 13

D) 10

E) 15

B) 14

Determine the number of valence electrons in sulfuric acid (H₂SO₄) and then draw the corresponding Lewis structure (by following the octet rule on all atoms).

A) 32

B) 28

C) 36

D) 33

E) 30

A) 32

Which of the following is the strongest type of bond?

A) a single bond

B) a double bond

C) a triple bond

C) a triple bond

Which of the following has the shortest bond length?

A) a single bond

B) a double bond

C) a triple bond

C) a triple bond

Which one of the following is the most electronegative atom?

A) C

B) N

C) O

D) F

D) F

Based on their positions in the periodic table, which of the following bonds is the most polar?

A) C - O

B) C - N

C) C - B

D) C - F

D) C - F

Which one of the following statements is FALSE?

A) In a polar covalent bond, the electrons in the bond will be closer to the more electronegative atom

B) In a nonpolar covalent bond, the electrons in the bond are equally balanced between the two atoms

C) In a bond between boron and hydrogen, the electrons will be unequally shared

D) A bond between nitrogen and oxygen will be polar

E) In a bond between magnesium and sulfur, the electrons will be shared and closer to the sulfur

E) In a bond between magnesium and sulfur, the electrons will be shared and closer to the sulfur

Draw the Lewis structure of CBr₄ and then determine its electron domain and molecular geometries.Click to edit molecule

A) trigonal / planar

B) linear / trigonal pyramidal

C) tetrahedral / tetrahedral

D) planar / trigonal

E) planar / tetrahedral

C) tetrahedral / tetrahedral

Draw the Lewis structure of HCN and then determine its electron domain and molecular geometries.Click to edit molecule

A) tetrahedral / planar

B) trigonal planar / tetrahedral

C) tetrahedral / bent (109.5º)

D) linear / linear

E) bent (120º) / bent (109.5º)

D) linear / linear

Draw the Lewis structure of SF₄ and then determine its electron domain and molecular geometries.Click to edit molecule

A) trigonal planar / tetrahedral

B) trigonal / trigonal planar

C) pyramidal / pyramidal

D) trigonal bipyramidal / see-saw

E) trigonal / bent (109.5º)

D) trigonal bipyramidal / see-saw

Draw the Lewis structure of OF₂ and then determine the ideal bonding angle(s) of the central atom.Click to edit molecule

A) 135º

B) 45º

C) 120º

D) 60º

E) 109.5º

E) 109.5º

Draw the Lewis structure of SO₂ (by following the octet rule on all atoms) and then determine the ideal bonding angle(s) of the central atom.Click to edit molecule

A) 109.5º

B) 180º

C) 120º

D) 60º

E) 30º

C) 120º

A Lewis structure for a different isomer C₂H₂F₂ is shown below. Based on this structure, determine if the molecule is polar or nonpolar.

A) Nonpolar

B) Polar

A) Nonpolar

A Lewis structure for the molecule phenol (C₆H₅OH) is shown below. Based on this structure, determine if the molecule is polar or nonpolar.

A) Nonpolar

B) Polar

B) Polar

Draw the Lewis structure of CH₃F and then determine if the molecule is polar or nonpolar.

B) Polar

A Lewis structure for one isomer C₂H₂F₂ is shown below. Based on this structure, determine if the molecule is polar or nonpolar.

A) Nonpolar

B) Polar

B) Polar

Draw the Lewis structure of carbon monoxide (CO) and then determine if the molecule is polar or nonpolar. Please place the elements in the order that they are written.

A) Nonpolar

B) Polar

B) Polar

Which one of the following best describes the difference between molar mass and formula weight?

A) Formula weights are measured in grams per mole, while molar masses are measured in atomic mass units.

B) A formula weight is the mass of one molecule or formula unit while a molar mass is the mass of one mole of molecules or formula units.

C) Molar masses only describe the mass of ionic compounds, while formula weights can describe any compound.

D) There is no difference between molar masses and formula weights.+

B) A formula weight is the mass of one molecule or formula unit while a molar mass is the mass of one mole of molecules or formula units.

Determine the formula weight of Ca(NO₃)₂

164.10 amu

Determine the molar mass of Fe(NO₃)₂.

179.85 g/mol

Which of the following has the greatest molar mass?

A) CaF₂

B) MgBr₂

C) CsF

D) RbCl

B) MgBr₂

A hydrocarbon is referred to as __________ if all the bonds in the molecule are single bonds.

A) aromatic

B) saturated

C) unsaturated

D) planar

E) octahedral

B) saturated