First member of each of the groups 1, 2, 13-17 differ in many respects

1.	First member of each of the groups 1, 2, 13-17 differ in many respects from other members of theirrespective groups because ofi) small sizeii) high electronegativityiii) absence of d-orbitals in valence shelliv) absence of isotopesA) i & iiB) iiiC) i, ii & iii D) i, ii, iii & iv
Answer» Answer: I THINK option A if it is correct PLZZ FOLLOW me dear

First member of each of the groups 1, 2, 13-17 differ in many respects from other members of theirrespective groups because ofi) small sizeii) high electronegativityiii) absence of d-orbitals in valence shelliv) absence of isotopesA) i & iiB) iiiC) i, ii & iii D) i, ii, iii & iv

Answer»

Answer:

I THINK option A

if it is correct PLZZ FOLLOW me dear