Question

le
a
2. The valencies of the atom H, O and N
are 1, 2 and 3 respectively. The
molecular formulae of these gaseous
elements are H,,o,,and N, respectively
How many chemical bonds are there in
each of these molecules?​

Answer 1

Answer:

Group 1 Group 2

One electron in valence shell Two electron in valence shell

Larger atomic size compared to Group 2 Smaller atomic size compared to Group 1

More metallic in nature Comparatively less metallic

Highly electropositive, readily loses electron Comparatively less electropositive

Oxide formula: X

2

O Oxide formula: XO

Chloride formula: XCl Chloride formula: X

2

Cl

Answer 2

Answer:

covalent bond

for eg

formation of h2o is polar covalent

formation of ammonia

etc. because bond i.e formed by the sharing of elections is called covalent bond

hope this helps you