Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code: [NEET - 2018] | ||||||||||||
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A) a-iv b-i c-ii d-iii
B) a-I b-ii c-iii d-iv
C) a-iv b-v c-ii d-i
D) a-iii b-v c-I d-ii
Correct Answer: C
Solution :
[c] \[\text{C}{{\text{o}}^{\text{3+}}}\text{= }\!\![\!\!\text{ Ar }\!\!]\!\!\text{ 3}{{\text{d}}^{\text{6}}}\], Unpaired\[{{\text{e}}^{\text{--}}}\text{(n)=4}\] |
Spin magnetic moment \[\text{=}\sqrt{4(4+2)}=\sqrt{24}\text{BM}\] |
\[\text{C}{{\text{r}}^{\text{3+}}}\text{= }\!\![\!\!\text{ Ar }\!\!]\!\!\text{ 3}{{\text{d}}^{\text{3}}}\text{,}\] Unpaired \[{{\text{e}}^{\text{-}}}\text{(n)=3}\] |
Spin magnetic moment\[\text{=}\sqrt{3(3+2)}=\sqrt{15}\text{BM}\] |
\[F{{e}^{3}}+=[Ar]3{{d}^{5}}\], Unpaired\[{{e}^{}}(n)=5\] |
Spin magnetic moment\[=\sqrt{5(5+2)}=\sqrt{35}\text{BM}\] |
\[\text{N}{{\text{i}}^{\text{2+}}}\text{= }\!\![\!\!\text{ Ar }\!\!]\!\!\text{ 3}{{\text{d}}^{\text{8}}}\text{,}\] Unpaired \[{{e}^{-}}(n)=2\] |
Spin magnetic moment \[=\sqrt{2(2+2)}=\sqrt{8}\text{BM}\] |
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