The second IP of Cr is high due to

The second IP of Cu is very high due to the configuration of Cu^(+) is

First ionisaion potential of nitrogen is more than that first I.P of oxygen, but the second I.P of oxygen is more than the second IP of nitrogen. Explain.

The first I.P. of 'C' is greater than of 'B' where as reverse is true for second I.P. Explain.

High boiling point of water is due to :

High boiling point of water is due to :

the high viscosity and high boiling point of HF is due to :