Homework #4 - Shape and lonic Formulas

Write formulas for the following ionic compounds.

1. Li and O

2. Al and Cl

3. Sodium and Nitrate

4. Cr(II) and Bromine

5. Ammonium and Sulfur

6. Silver (1) and Phosphate

7. Magnesium and Carbonate

Molecular Shapes

CA = central atom and TA = terminal atom.

Identify which of the following drawings on the left represents each compound and write the letter in

the space labeled "Correct Lewis Dot". Then identify the name of the shape the molecule will make

and draw a 3D sketch of the molecule.