Question

Check Point 01
1 What do you mean by covalent bonding?
2 An element X which has 6 electrons in its outermost shell
require 2 electrons to complete its octet for attaining noble gas
configuration X is an essential element for the survival of all
living beings. What is X?
3 F in the blanks
The main constituent of marsh gas is
(4) In case of a water molecule, hydrogen acquires a
configuration
4 Write the covalent bonding in nitrogen
5 Why covalent compound are volatile in nature with low boiling
and low melting point?
6 State True or False for the following statements:
Covalent compounds shows large melting point and boiling
point?​

Answer 1

Amswer

1. The forces of attraction or repulsion between two atoms, when they share electron pair or bonding pair, is called as Covalent Bond.
2. The element X is oxygen. The atomic number is 8, and its electronic configuration is 2,6. Oxygen is used for respiration by the living beings.
3. 1. Methane ; 2.Single covalent bond configuration.
4. Nitrogen has the electronic configuration 2, 5. It shares 3 of the outermost electrons with another nitrogen atom to form a triple-bonded N2 molecule
5. Covalent compounds have weak forces of attraction between the binding molecules. Thus less energy is required to break the force of bonding. Therefore covalent compounds have low melting and boiling point.
6. False.They have low melting and boiling point .