$\therefore \text { Unpaired } e ^{-}=5$
$\mu=\sqrt{ n ( n +2)}$
$=\sqrt{5(5+2)}$
$\mu=\sqrt{35}=5.92 \text { B.M. }$
${\left[ Fe ( CN )_6\right]^{-3}}$
Pairing occur due to strong field ligand $CN ^{-}$
$\therefore$ Unpaired $e^-$ $\Rightarrow 1$
$\mu=\sqrt{ n ( n +2)}$
$=\sqrt{1(1+2)}=\sqrt{3}=1.732 \text { B.M. }$
$(1) $ $[Ag(NH_3)_2]^{+}$ - રેખીય
$ (2) $ $[MnCl^4]^{2-}$ - ચતુષ્ફલકીય
$(3) $ $[Cu(NH_3)_4]^{2+}$ - ચોરસ સમતલ
$(4) $ $[Ni(CN)_4]^{2-}$ - ચોરસ સમતલ