$I \cdot E_2-I E_1=412-284=128 \cdot kJ / mol$
$I \cdot E_3-I \cdot E_2=654-412=242 kJ / mol$
$I \cdot E_4-I \cdot E_3=3210-656=2554 kJ / mol$.
The avalue of $2554\,kJ/mol$ is the differeace between $I-E_4$ and $I-E_3$ suggest that the element is not able to loose its electron After loosing the three election. i.e the element will become stable on loss of three electrons.
$[Xe]4f^{14}\, 5d^1\, 6s^2$
પછી તત્વ $'P'$ વિશેનું સાચું વિધાન કયુ છે?
$(a)\; C \;\;(b)\; O \;\;(c)\; F\;\; (d) \;Cl\;\; (e)\; Br$