Question

Give the formulae of the compounds formed from the following sets of elements :

1. Calcium and fluorine
2. Hydrogen and sulphur
3. Nitrogen and hydrogen
4. Carbon and chlorine
5. Sodium and oxygen
6. Carbon and oxygen.

Answer 1

Calcium fluoride (CaF₂), hydrogen sulfide (H₂S), ammonia (NH₃), carbon tetrachloride (CCl₄), sodium oxide (Na₂O), carbon dioxide (CO₂).

Step-by-step explanation:

1. The compound formed by calcium and fluorine is called calcium fluoride, with the chemical formula CaF₂.

2. The compound formed by hydrogen and sulfur is called hydrogen sulfide, with the chemical formula H₂S.

3. The compound formed by nitrogen and hydrogen is called ammonia, with the chemical formula NH₃.

4. The compound formed by carbon and chlorine is called carbon tetrachloride, with the chemical formula CCl₄.

5. The compound formed by sodium and oxygen is called sodium oxide, with the chemical formula Na₂O.

6. The compound formed by carbon and oxygen is called carbon dioxide, with the chemical formula CO₂.