Chemistry - Complete d-block Question with Solution | TestHub

${\mathrm{Cr}}^{2+}=3d^4$, No. of unpaired electrons $(n)=4$ Magnetic moment $=\sqrt{(+2)}\mathrm{BM}$ $=\sqrt{4(4+2)}=\sqrt{24}=4.89\mathrm{BM}$ ${\mathrm{Fe}}^{2+}=3d^6$, No. of unpaired electrons $(n)=4$ Magnetic moment $=\sqrt{4(4+2)}\mathrm{BM}$ $=\sqrt{24}=4.89\mathrm{BM}$ ${\mathrm{Mn}}^{2+}=3d^5$, No. of unpaired electrons $(n)=5$ Magnetic moment $=\sqrt{5(5+2)}\mathrm{BM}$ $=\sqrt{35}=5.91\mathrm{BM}$ ${\mathrm{Co}}^{2+}=3d^7$, No. of unpaired electrons $(n)=3$ Magnetic moment $=\sqrt{3(3+2)}\mathrm{BM}$ $=\sqrt{15}=3.87\mathrm{BM}$ ${\mathrm{Ni}}^{2+}=3d^8$, No. of unpaired electrons $(n)=2$ Magnetic moment $=\sqrt{2(2+2)}\mathrm{BM}$ $=\sqrt{⊛}=2.82\mathrm{BM}$