Hydroxides of group I are basic as compared to those of group II due to:
Small size of group I elements
Larger size of group I elements
Lower ionization energies of group I elements
Only b and c
As we learn
Basic nature of hydroxides of alkaline metals compared to alkali metals -
Basic character is lesser than group 1 hydroxides
- wherein
Due to larger size of group 1 elements and have lower ionisation energies
Hydroxides of group I are more basic than group II metal hydroxides because of larger size of group I elements and their lower ionization energy.