chem 6 3

Which is the strongest acid in aqueous solution?

HNO3(aq)

Which of the compounds CH₄, SrCl₂, Cr(NO₃)₃, XeF₂ are expected to exist as covalent molecules?

CH₄ and XeF₂

What is the chemical formula for iron(II) phosphate?

Fe₃(PO₄)₂

In which set do all elements tend to form anions in binary ionic compounds?

A) C, S, Pb

B) K, Fe, Br

C) Li, Na, K

D) N, O, I

D.) N, O, I

Which of the following is the correct chemical formula for a molecule of bromine?

Br₂

Which of the following statements concerning ionic compounds is true?

a.) The chemical formula for an ionic compound must show a nonzero net charge.
b.) Essentially all ionic compounds are solids at room temperature and pressure.
c.) Ionic compounds do not contain any covalent bonds.
d.) Ionic compounds contain the same number of positive ions as negative ions.

b.) Essentially all ionic compounds are solids at room temperature and pressure.

The compound, Cu(ClO₃)₂, is named:

copper(II) chlorate.

Which of the compounds, C₃H₈, MgCl₂, Zn(NO₃)₂, OCl₂ are expected to exist as molecules?

C₃H₈ and OCl₂

Which of the below drawings represents a pure element?

Rb₂S is named:

rubidium sulfide

By analogy with the oxoacids of sulfur, H₂TeO₃would be named:

tellurous acid

What is the charge on the Cr in the ionic compound Cr₂O₃?

3+

What is the most likely charge on an ion of phosphorus, P?

3-

What is the chemical formula for calcium hydroxide?

Ca(OH)₂

Which of the below drawings represents a pure compound?

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

covalent bonding

Which element can form more than one kind of monatomic ion?

Cr

Which one of the following compounds contains ionic bonds?

a.) SrO
b.) PBr₃
c.) SiO₂
d.) HBr

a.) SrO

Which drawing represents the ionic compound Na2CO3 (cations are shown as white spheres and anions as grey spheres)?

???

If unshaded spheres represent sulfur atoms and shaded spheres represent oxygen atoms, which of the following drawings depicts a collection of sulfur trioxide molecules?

In which set do all elements tend to form cations in binary ionic compounds?

A) N, As, Bi

B ) LI, B，O

C) Mg, Cr, Pb

D ) O, F, CI

C.) Mg, Cr, Pb

Identify all of the following compounds that contain covalent bonds?

SiO2

NI3

HF

The ions ClO₄^- ClO₃^-, ClO₂^-, and ClO^- are named respectively:

perchlorate, chlorate, chlorite, hypochlorite.

The formulas of the hydroxide ion, the nitrate ion, and the nitrite ion are represented respectively as:

OH^-, NO₃^-, NO₂^-

The chemical formula for calcium nitride is:

Ca₃N₂

What is the chemical formula for iron (III) sulfate?

Fe₂(SO₄)₃

Which of the following elements has the least tendency to form an ion?

Kr

The compound, SO3, is named:

sulfur trioxide

The solid compound, Mg(NO3)2, contains:

Mg2+ ions and NO3- ions.

Which of the compounds, Li3P, PH3, C2H6, IBr3, are ionic compounds?

only Li3P