Which of the following elements in their respective oxidation states does not develop spin only magnetic…
Which of the following elements in their respective oxidation states does not develop spin only magnetic moment?
$\text { [Ti }(\mathrm{Z}=22), \mathrm{Zn}(\mathrm{Z}=30), \mathrm{V}(\mathrm{Z}=23), \mathrm{Cu}(\mathrm{Z}=29)]$
$\mathrm{Cu}^{2+}$
$\mathrm{Zn}^{2+}$
$\mathrm{Ti}^{3+}$
$\mathrm{V}^{3+}$
Solution
Spin only magnetic moment $=\sqrt{\mathrm{n}(\mathrm{n}+2)}$ $\mathrm{n}=$ no. of unpaired electrons $\mathrm{Zn}^{2+} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^{10}$
$\mathrm{n}=0$
Spin only magnetic moment $=0$
$\mathrm{n}=0$
Spin only magnetic moment $=0$