The magnetic moments of complex given below are in order I . [ N i ( C O ) 4 ] I I . [ M n ( C N ) 6 ] 4 - I I I . [ C r ( N H 3 ) 6 ] 3 + I V . [ C o F 6 ] 3 -

Question

The magnetic moments of complex given below are in order I . [ N i ( C O ) 4 ] I I . [ M n ( C N ) 6 ] 4 - I I I . [ C r ( N H 3 ) 6 ] 3 + I V . [ C o F 6 ] 3 -, I > II > III > IV, I < II < III < IV, IV > II > I > III, IV < II < I < III

MARKS App · Accepted Answer

Magnetic moment μ = n ( n + 2 ) B . M . n = unpaired electrons. I . [ N i ( C O ) 4 ] n = 0, so μ → = 0 BM I I . [ M n ( C N ) 6 ] 4 - n = 1, so μ → = 3 BM I I I . [ C r ( N H 3 ) 6 ] 3 + n = 3, so μ → = 15 BM I V . [ C o F 6 ] 3 - n = 4, so μ → = 24 BM Order of magnetic moment is I

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