Question

2) Find atomicity of
a) H₂O₂-
(6) CuSO4-
(6) Mg(OH)2
(d) (NH4)2SO4

Answer 1

Answer:

Explanation:

a) 2

Two molecule of hydrogen react with one molecule of oxygen to form two molecules of water. Each molecule of hydrogen has two atoms of hydrogen, the atomicity of hydrogen is two.

b) 6

The total number of atoms present in a molecule is called its atomicity. So atomicity for copper sulphate is: CuSO4 = 1+1+4 = 6.

c) 5

Mg(OH)2= no. of atom of Mg+O+H  = 1+2+2  = 5u

d)  20

But in case atomicity is asked for a heteronuclear molecule then atomic simply means the total number of atoms present in the given molecule e.g the atomicity of ammonium phosphate (NH4)3PO4 is 3(1+4)+ 1 + 4 = 20