Question

Pick up the statements which are related with carbon:

1. 14^th group element.

2. In the human body, it is second most abundant element by mass after oxygen.

3. Non-metallic.

4. 15^th group element.

5. One of the few elements known since antiquity.

6. Only 4 electrons are available for bonding.

7. Only 3 electrons are available for bonding.

8. Metallic.

• A. All are related to carbon.
• B. Only 1,2,3,5 and 6 are related to carbon.
• C. Only 1, 2,8 and 6 are related with carbon.
• D. Only 6, 4 and 8 are related to carbon.

Answer 1

The correct option is B Only 1,2,3,5 and 6 are related to carbon.

Carbon is member of group 14 on the periodic table; it is non-metallic and tetravalent—making four electrons available to form covalent chemical bonds.

Carbon is present in all forms of carbon-based life, and in the human body carbon is the second most abundant element by mass (about 18.5%) after oxygen.

Carbon is one of the few elements known since antiquity.