Four elements \( A, B, C \) and \( D \) have electronic configurati...
Four elements \( A, B, C \) and \( D \) have electronic configurations given below, which one has highest ionisation energy ?
(a) \( A=[\mathrm{Ne}] 3 s^{2} 3 p^{2} \)
(b) \( B=[\mathrm{Ne}] 3 s^{2} 3 p^{3} \)
\( \mathrm{P} \)
(c) \( C=[\mathrm{Ne}] 3 s^{2} 3 p^{5} \)
(d) \( D=[\mathrm{Ne}] 3 d^{10} 4 s^{2} 4 p^{3} \)
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