Question

(ii) What is meant by a covalent bond? OR Explain the term covalent bond with
the following examples:
(a) How is hydrogen molecule formed?
(b) Describe the formation of oxygen molecule.
(c) Describe the formation of nitrogen molecule.​

Answer 1

Answer:

covalent bond is the sharing of electrons 2 fulfil the law of electron octet..

Explanation:

it's basically sharing of electrons..

for example, carbon is a tetravalent.. it has 4 valence electrons.. so it shares its electrons.

It mostly does with Hydrogen..

H

l

H - C - H

l

H

Answer 2

Answer:

Generally a covalent bond is formed when atoms if two elements having similar properties combine . Such atoms cannot exchange electrons. Instead, these atoms share electrons with eachother. The shared electron become a common property of both the atoms and thereby the electron octet/duplet of both the atoms becomes complete.

(a) a hydrogen atom contains one electron, its duplet is short of one electron and therefore the valency of hydrogen is one. The two atoms of hydrogen are identical and have similar tendency and therefore they share their electrons with eachother. As a result, the electron duplet of both the hydrogen atoms is complete and a chemicall bond is formed between them.