The reason for the stability of Gd 3 + ion is Options: A . &nbsp4 f sub shell empty B . &nbsp4 f sub shell- completely filled C . &nbspPossesses the general electronic configuration of noble gases D . &nbsp4 f sub shell- half filled

The reason for the stability of Gd3+ ion is

Question

The reason for the stability of Gd

^{3} +

ion is

Options:

A . 4 f sub shell empty

B . 4 f sub shell- completely filled

C . Possesses the general electronic configuration of noble gases

D . 4 f sub shell- half filled

Answer: Option D
:
D
Gd=

4 f^{7} 5 d^{1} 6 s^{2}; G d^{3 +} = 4 f^{7}

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