નીચે પૈકી ક્યા સંકીર્ણમાં ચુંબકીય ચાકમાત્રા શૂન્ય છે (માત્ર સ્પિન)?

Question

AIIMS 2009, Medium

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Solution

d
$[Ni{(N{H_3})_6}]C{l_2}$ $\to $ $s{p^3}{d^2}$ hybridisation $\to $ $2$ unpaired electrons

$N{a_3}[Fe{F_6}]$ $\to $ $s{p^3}{d^2}$ hybridisation $\to $ $3$ unpaired electrons

$[Cr{({H_2}O)_6}]S{O_4}$ $\to $ ${d^2}s{p^3}$ hybridisation $\to $ $3$ unpaired electrons

${K_4}[Fe{(CN)_6}]$ $\to $ ${d^2}s{p^3}$ hybridisation $\to $ No unpaired electrons

Zero magnetic moment means all the electrons paired.

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