Question

Explain the formation of h2 moleculr on the basis of valance band theory

Answer 1

H2

ne( electron), np(proton)

H(a) . H(b)

ne(A) . ne(B)

np(A) . np(B)

Here

Attractive force

ne(A) -np(A)

ne(B) -np(B)

ne(A) -np(B)

ne(B) -np(A)

Repulsive force

ne(A) -ne(B)

np(B) -np(B)

Therefore no. Of attractive force is greater then no. Of repulsive

As a result H2 is formed in a molecule.