Which of the following statements is/are wrong?

Options

A. Van der waals' radius of iodine is more than its covalent radius
B. all isoelectronic ions belong to same period of the peridic table
C. `I.E_(1)` of N is higher than that of O while `I.E_(2)` of O is higher than that of N
D. The electron affinity N is almost zero while that of P is 74.3 kJ `mol^(-1)`

Answer

B

Explanation

In the isoelectronic species, all isoelectronic anions belong to the same period and cations to the next period.