D And F Block Elements Question 144

A transition element $ X $ has a configuration $ d^{n} $

[ Ar ]3d^{5} $ in its + 3 oxidation state. Its atomic number is [CBSE PMT 1996]

Options:

25

26

22

19

Show Answer

Answer:

Correct Answer: A

Solution:

Number of electrons in ground state $ {{X}^{+3}}=18+4=22 $

Number of electrons in ground state $ X=22+3=25 $ .

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