Atomic Numbers and Electron Configurations

Question 1

Select the word or phrase from the drop-down menu to describe ionic compounds.A formula unit represents the simplest ratio of elements in a of an ionic compound.

Revolt · Accepted Answer

A: crystal

Question 2

The formula for the ammonium ion:

Revolt · Accepted Answer

B: NH4+

Question 3

The polyatomic ion with the formula CN- is called

Revolt · Accepted Answer

B: cyanide.

Question 4

The formula for the compound ammonium chloride:

Revolt · Accepted Answer

B: NH4Cl

Question 5

The formula for ammonium carbonate:

Revolt · Accepted Answer

C: (NH4)2CO3

Question 6

The formula for sodium phosphate:

Revolt · Accepted Answer

C: Na3PO4

Question 7

Which statements describe lattice energy?

Revolt · Accepted Answer

B: It increases as the size of the ions decreases.; C: It increases as the charge on the ions increases.; E: It is a measure of the strength of the bonds between ions in a compound.

Question 8

There are two magnesium ions for every two sulfide ions in magnesium sulfide. The ratio of Mg to S in the formula unit is .

Revolt · Accepted Answer

A: 1:1

Question 9

The formula for the nitrate ion:

Revolt · Accepted Answer

A: NO3–

Question 10

The polyatomic ion with the formula HPO42- is called

Revolt · Accepted Answer

A: hydrogen phosphate.

Atomic Numbers and Electron Configurations Answers

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