MCQ
Which one of the following is the smallest in size
  • A
    ${N^{3 - }}$
  • B
    ${O^{2 - }}$
  • C
    ${F^ - }$
  • $N{a^ + }$

Answer

Correct option: D.
$N{a^ + }$
d
(d) $N{a^ + } < {F^ - } < {O^{2 - }} < {N^{3 - }}$All are isoelectronic, effective number charge is highest for $N{a^ + }$ so it has smallest size.

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