Question

A. Determine whether the following are molecules or ions. 

1. fluorine gas (F )

2. lithium fluoride (LiF)

3. glucose (C ) H O

B. Indicate the number of electrons lost or gained in forming theses ions:

1. Gold (III)

2. OH 

C. Give the name of each of the following compounds.

1.NO2

2.NaF

3. CaBr2

D. Given the name of the compound, write the molecular formula. 

1.carbon monoxide

2.nitrogen trichloride

Answer 1

A. 1. F - molecule; 2 - LiF -  ionic compound; 3. C₆H₁₂O₆ - molecule.

B. 1. Gold (III) - 3 electrons lost; 2. OH^- - 1 electron gained.

C. 1. Nitrogen dioxide; 2. Sodium fluoride; 3. Calcium bromide.

D. 1. Carbon monoxide - CO; 2. Nitrogen trichloride - NCl₃.