Question

Give reason atomic size of carbon is less than that of boron

Answer 1

Explanation:

The size of carbon is less than that of Boron, because the Z-effective of carbon is more than Boron ,so atomic size of boron is less than carbon as because Z-effective is inversely proportional to atomic size ...

Answer 2

Explanation:

First you should familiar with periodic table(P.T) trends that when we move left to right in P.T then atomic size decreases. Since, the outer electrons are in the same shell but are being attracted by more highly charged nucleus. Where Carbon has Covalent atomic radius of 70pm and that of Boron is 85pm.