The first ionisation energy of beryllium is more than that of boron because

Assertion (A): First ionisation energy of beryllium is greater than that of boron. Reanos (R): Boron has larger size than beryllium.

The first ionisation energy of silicon is lower than that of

The first ionisation energy of silicon is lower than that of

The first ionisation energy of silicon is lower than that of

Why ionization enthalpy of berylium is more than that of boron ?

The ionisation energy of nitrogen is more than that of oxygen because

The ionisation energy of nitrogen is more than that of oxygen because

The first ionisation energy of Al is smaller than that of Mg because :