Question
For the second period elements the correct increasing order of first ionisation enthalpy is
$\left[s^{1} < p^{1} < s^{2} < p^{2} < p^{4} < p^{3} < p^{5} < p^{6}\right]$
$B < B e < C < O < N < F < N e$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.