Give the formulae of the compounds formed from the following sets of e

1.	Give the formulae of the compounds formed from the following sets of elements (a) Calcium and fluorine (b) Hydrogen and sulphur (c) Nitrogen and hydrogen (d) Sodium and oxygen
Answer» ANSWER 1. Calcium and FLUORINE Symbol Ca F Charges +2 1− Formula CaF2 2. Hydrogen and SULPHUR Symbol H S Charges 1+ 2− Formula H2S 3. NITROGEN and hydrogen Symbol N H Charges 3− 1+ Formula NH3 4. Carbon and chlorine Symbol C Cl Charges 4+ 1− Formula CCl4 5. Sodium and oxygen Symbol Na O Charges 1+ 2− Formula Na2O 6. Carbon and oxygen. Symbol C O Charges 4+ 2− C2O4 i. e. Formula CO2

Give the formulae of the compounds formed from the following sets of elements (a) Calcium and fluorine (b) Hydrogen and sulphur (c) Nitrogen and hydrogen (d) Sodium and oxygen

Answer»

ANSWER

1. Calcium and FLUORINE

Symbol Ca F

Charges +2 1−

Formula CaF2

2. Hydrogen and SULPHUR

Symbol H S

Charges 1+ 2−

Formula H2S

3. NITROGEN and hydrogen

Symbol N H

Charges 3− 1+

Formula NH3

4. Carbon and chlorine

Symbol C Cl

Charges 4+ 1−

Formula CCl4

5. Sodium and oxygen

Symbol Na O

Charges 1+ 2−

Formula Na2O

6. Carbon and oxygen.

Symbol C O

Charges 4+ 2−

C2O4 i. e.

Formula CO2