BORON FAMILY

//Here we are going to study more about boron family in p-block

These are the main elements in Boron family

B

Al

Ga

In

Tl

Now lets study more detailed about boron family.

*Boron is a well known metal and it always form covalent bonds. It has 5 electrons which revolve around nucleus. Its atomic number is 5.

Atomic size

There is always a increase in atomic size due to the increase in number of shells. But as an exception there is a small decrease in size of aluminium to gallium. This is observed due to the poor screening effect of 10 d electrons,and there is a considerable increase in size from In to Tl due to the poor screening effct of 14 f electrons.

Ionisation enthalpy