A transition element X has a configuration [ Ar ]3 d^4 in its + 3… - Vidyadip

MCQ

A transition element $X$ has a configuration $\left[ {Ar} \right]3{d^4}$ in its $+ 3 $ oxidation state. Its atomic number is

✓
$25$
B
$26$
C
$22$
D
$19$

✓

Answer

Correct option: A.

$25$

a
(a)Number of electrons in excited state

${X^{ + 3}} = 18 + 4 = 22$

Number of electrons in ground state

$X = 22 + 3 = 25$.

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