Select the proper option and complete the statements

(single, all, double, ionic, carbon, give and take, hydrogen, multiple, share, most, covalent)

A. A carbon atom forms a …… bond with other atoms. In this bond the two atoms …. electrons.

B. All the carbon bonds in a saturated hydrocarbon ....…. electrons.

C. At least one carbon bond in an unsaturated hydrocarbon is ….

D. …. is the essential element in all the organic compounds?

E. The element hydrogen is present in …. organic compound.

A. A carbon atom forms a covalent bond with other atoms. In this bond the two atoms share electrons.

Explanation: A carbon atom forms a covalent bond with other atoms

because its outer shell is half full as shown in the figure below:

In the covalent bond, sharing of electrons takes place. For example:

CH₄

B. All the carbon bonds in a saturated hydrocarbon share electrons.

Explanation: The hydrocarbons having only single bonds between carbon atoms are called saturated hydrocarbons. Saturated

form covalent bond (by sharing of electrons)

C. At least one carbon bond in an unsaturated hydrocarbon is

double.

Explanation: Some hydrocarbons have a multiple bond between two carbon atoms. A multiple bond can be a double bond or a triple

bond. Hydrocarbons having at least one multiple bond are called unsaturated hydrocarbons.

For example, ethene

D. Carbon is the essential element in all the organic compounds.

Explanation: A carbon atom exhibits a characteristic property. It can form a chain of carbon atoms by forming covalent bonds with

other carbon atoms. Hence, it is the most essential element in the organic compounds.

E. The element hydrogen is present in most organic compounds.

Explanation: Along with carbon, the element hydrogen is also included in most organic compounds.