The first ionisation potential will be maximum for

The first ionosation potential will be maximum for :

The first ionisation potential is maximum for

The first ionisation potential is maximum for

The first ionisation potential is maximum for

The first ionisation potential is maximum for

Amongst Be, B, Mg and Al the second ionisation potential is maximum for-

Among the following options , the sequence of increasing first ionisation potential will be

The first ionisation potential of carbon is more than that of boron while this trend is reverse in the case of second ionisation potential-explain.