Gallium has smaller atomic radius than aluminium because of

Assertion : Gallium has smaller atomic size than aluminium Reason : Because of greater nuclear attraction due to poor shielding effect of outer shell electrons from the nucleus by the d-electrons

Assertion: Potassium has a bigger atomic radius than Lithium Reason :Atomic radius decreases along a period

Ca^(2+) has a smaller ionic radius than K^(oplus) because it has "………" .

Gallium has unexpectdly less atomic radius than that of Al. Explain why ?

Ca^(2+) has a smaller ionic radius than K^(+) because it has ................ .