1.

Which of the following ions show higher spin only magnetic moment value ?

Answer»

`Ti^(3+)`
`Mn^(2+)`
`Fe^(2+)`
`Co^(3+)`

SOLUTION :`Ti^(3+)= 3D^(1) , Mn^(2+)= 3d^(5) , (t_(2g)^(3) e_(G)^(2)), Fe^(2+) = 3d^(6) ( t_(2g)^(4) e_(g)^(2)), Co^(3+) = 3d^(6) ( t_(2g)^(6) e_(g)^(0) ) `. In `Co^(3+)` , crystal fieldsplitting ENERGY (CFSE) is highand so electrons pair up in `t_(2g)` . Thus, only `Mn^(2+)` and `Fe^(2+)` show higher spin magnetic moment value.


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