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

crystal

Question 2

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

1:1

Question 3

Ionic compounds tend to be

Revolt · Accepted Answer

hard.

Question 4

The formula for the ammonium ion:

Revolt · Accepted Answer

NH4+

Question 5

The polyatomic ion with the formula CN- is called

Revolt · Accepted Answer

cyanide.

Question 6

The formula for the compound ammonium chloride:

Revolt · Accepted Answer

NH4Cl

Question 7

The formula for ammonium carbonate:

Revolt · Accepted Answer

(NH4)2CO3

Question 8

The formula for sodium phosphate:

Revolt · Accepted Answer

Na3PO4

Question 9

Which statements describe lattice energy?

Revolt · Accepted Answer

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

Question 10

The melting point of an ionic compound is likely to be a molecular compound.

Revolt · Accepted Answer

higher than

Atomic Numbers and Electron Configurations Answers

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