Try It Yourself

Molecular Formula

Examples:

1. LiCl - 1 atom Lithium and 1 atom Chlorine
2. CaBr₂ - 1 atom Calcium and 2 atoms Bromine
3. NO₂ - 1 atom Nitrogen and 2 atom Oxygen
4. SiF₄ - 1 atom Silicon and 4 atoms Florine

1. Be₃P₂
2. BaS
3. NaI
4. K₃N
5. MgF₂

Section 2: Directions: Determine the molecular formula from the number and kinds of elements in each compound.

1. 1 atom Zinc; 1 atom Oxygen
2. 1 atom Barium; 2 atoms Floride
3. 1 atom Strontium; 1 atom Oxygen
4. 1 atom Magnesium; 2 atoms Florine
5. 1 atom Cesium; 1 atom Florine

Answers

Section 1

1. Be₃P₂ - 3 atoms Berillium; 2 atoms Phosphorous

2. BaS - 1 atom Barium; 1 atom Sulfur

3. NaI - 1 atom Sodium; 1 atom Iodine

4. K₃N - 3 atoms Potassium; 1 atom Nitrogen

5. MgF₂ - 1 atom Magnesium; 2 atoms Florine

Section 2

1. 1 atom Zinc; 1 atom Oxygen - ZnO

2. 1 atom Barium; 2 atoms Floride - BaF₂

3. 1 atom Strontium; 1 atom Oxygen - SrO

4. 1 atom Magnesium; 2 atoms Florine - MgF₂

5. 1 atom Cesium; 1 atom Florine - CsF