Chapter 2: Atoms, Molecules, and Ions
Predict the chemical formula for the ionic compound formed by NH₄⁺ and PO₄³⁻
(NH₄)3(PO₄)
*Provide the correct IUPAC name for Co₂(SO₄)₃.
(remember cobalt is a metal -> ionic compound) cobalt(III) sulfate
How many protons (p) and electrons (e) are found in a Se²⁻ ion? A) 34 p, 36 e B) 34 p, 32 e C) 32 p, 34 e D) 36 p, 34 e E) 34 p, 34 e
A) 34 p, 36 e
Which has the correct name-formula combination? A) Potassium nitrate - KNO₂ B) Cesium sulfate - Cs₂SO₃ C) Calcium sulfite - CaSO₃ D) Strontium nitrite - Sr(NO₃)₂
C) Calcium sulfite - CaSO₃
Determine the correct formula for iron(III) perchlorate. A) Fe₂ClO₄ B) Fe₂(ClO₄)₃ C) Fe(ClO₄)₃ D) Fe₃(ClO₄)₂
C) Fe(ClO₄)₃
Write the chemical formula for carbon disulfide
CS₂
Predict the chemical formula for the ionic compound formed by Ca²⁺ and ClO₃⁻
Ca(ClO₃)2
Provide the correct IUPAC name for CBr₄.
Carbon tetrabromide
Write the chemical formula for cobalt(II) oxide
CoO
Provide the correct IUPAC name for CoPO₄.
Cobalt (III) phosphate
Write the chemical formula for cesium carbonate
Cs₂CO₃
Determine the correct formula for titanium(IV) chloride. A) TiCl₂ B) Ti₄Cl C) Ti₂Cl₄ D) TiCl₄
D) TiCl₄
Which of the following represents a species with 39 protons and 36 electrons? A) K⁺ B) Y C) Ca²⁺ D) Y³⁺ E) Ar
D) Y³⁺
Which of the following atoms has the same number of neutrons as ⁵⁹Ni? A) ⁵⁷Co B) ⁵⁸Fe C) ⁵⁸Ni D) ⁵⁹Co E) ⁶⁰Cu
E) ⁶⁰Cu
Write the chemical formula for iron(III) chloride hexahydrate
FeCl₃•6H₂O
**Write the chemical formula for mercury(I) nitrate dihydrate
Hg₂(NO₃)₂•2H₂O
*Provide the correct IUPAC name for FeCl₃ · 6H₂O.
Iron (I) Chloride Hexahydrate (not -hydride)
Write the chemical formula for sodium hydride
NaH
Write the chemical formula for tetraphosphorus hexasulfide
P₄S₆
*Provide the correct IUPAC name for P₄S₃.
Tetraphosphorus trisulfide (not trisulfate)
*Write the chemical formula for zinc nitrate
Zn(NO₃)₂
Provide the correct IUPAC name for CuNO₃.
copper(I) nitrate
Provide the correct IUPAC name for N₂O₄.
dinitrogen tetraoxide
*Write the chemical formula for dinitrogen tetroxide N₂O₄
dinitrogen tetroxide (not tetraoxide)
**Provide the correct IUPAC name for HCN(aq).
hydrocyanic acid
Provide the correct IUPAC name for IF₅.
iodine pentafluoride
Provide the correct IUPAC name for MnSO₄.
manganese(II) sulfate
**Provide the correct IUPAC name for HClO₄(aq).
perchloric acid
**Provide the correct IUPAC name for H₂SO₃(aq).
sulfurous acid
An atom of the isotope ¹³³Cs contains how many protons (p), neutrons (n), and electrons (e)? A) 55 p, 55 n, 55 e B) 55 p, 78 n, 55 e C) 133 p, 133 n, 133 e D) 55 p, 133 n, 55 e E) 133 p, 55 n, 55 e
B) 55 p, 78 n, 55 e
What is the correct formula for cobalt(III) hydroxide? A) CoOH B) Co(OH)₃ C) Co₃OH D) Co₂(OH)₃
B) Co(OH)₃
Which has the incorrect name-formula combination? A) Sulfur dioxide - SO₂ B) Iodine trifluoride - IF C) Nitrogen tribromide - NBr₃ D) Silicon tetrafluoride - SiF₄
B) Iodine trifluoride - IF
What is the correct formula for barium phosphate? A) BaPO₄ B) Ba₂PO₄ C) Ba₂(PO₄)₃ D) Ba₃(PO₄)₂
D) Ba₃(PO₄)₂
*What is the correct formula for nickel(II) hypobromite? A) NiBrO B) Ni₂BrO C) Ni₃BrO D) Ni(BrO)₂
D) Ni(BrO)₂
Predict the chemical formula for the ionic compound formed by the elements Li and H
LiH
Write the chemical formula for sodium sulfite
Write the chemical formula for sodium sulfite Na₂SO₃
**Provide the correct IUPAC name for HBrO(aq).
hypobromous acid
