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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which set has the same number of unpaired electrons in their ground state
  • A
    $C{l^ - },F{e^{3 + }},C{r^{3 + }}$
  • B
    $N{a^ + }$, $M{g^{2 + }}$, $Al$
  • C
    $Na,\,P,\,\,Cl$
  • ✓
    $N,\,P,V$
✓

Answer

Correct option: D.
$N,\,P,V$
d
$(d)$ $N$ and $P$ have $3$ unpaired electrons in $2p$ and $3p$ respectively; $V$ has $3$ unpaired electrons in $3d$.

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