Assertion: In any transition series the magnetic moment of `M^(2+)` ions first decreases
Reason: In a transition series, the number of unpaired electrons first increases and then decreases.

Assertion: In any transition series the magnetic moment of M^(2+) ions first increases then decreases Reason: In a transition series, the number of unpaired electrons first increases and then decreases.

In the first transition series the incoming electron enters the :

In the first transition series the incoming electron enters the :

In the first transition series the incoming electron enters the :