Successive ionization energies of an element 'X' are given in the table (in K. Cal)
Electronic configuration of the element 'X' is:
- IP₁ : 165, IP₂ : 195, IP₃ : 556, IP₄ : 595
A. 1s²,2s²2p⁶,3s²3p²
B. 1s²,2s¹
C. 1s²,2s²2p²
D. 1s²,2s²2p⁶,3s²