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STD 11 - 3. Classification of elements and periodicity in properties — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 3. Classification of elements and periodicity in properties4 Marks
Question
Which has maximum first ionization potential?
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Answer

b
$\mathop B\limits_{2{p^1}} \,\mathop C\limits_{2{p^2}} \,\mathop N\limits_{2{p^3}} \,\mathop O\limits_{2{p^4}} \, \Rightarrow \,B\, < \,C\, < \,O\, < \,N$

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