1.

(a) Calculate the spin only magnetic moment of Ti^(3+)ion (Atomic number of Ti = 22).(b) Cu^(2+)salt solutions are coloured : given reason.

Answer»

Solution :(a) p = 7n (n + 2)
`L = yJl(l + 2)=y//3`(b) `CU^(2+)` ions contain one unpaired ELECTRON in its d-subshell and can undergo d-d TRANSITION. Therefore it is coloured.
In `Zn_(2+) `, there is no unpaired electrons, HENCE it does not undergo d-d transition. Hence it is colourless.


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