Which of the following statements (s) is (are) correct - Vidyadip

MCQ

Which of the following statements $(s)$ is (are) correct

A
The electronic configuration of $Cr$ is $[Ar]\,3{d^5}4{s^1}$ (Atomic no. of $Cr = 24$)
B
The magnetic quantum number may have a negative value
C
In silver atom, $23$ electrons have a spin of one type and $24$ of the opposite type (Atomic no. of $Ag = 47$)
✓
$A$ , $B$ or $C$

✓

Answer

Correct option: D.

$A$ , $B$ or $C$

d
(d) The oxidation state of nitrogen in $H{N_3}$ is $\, - \frac{1}{3}.$

$H{N_3}$: $1 + 3x = 0$ ==> $3x = - 1$ or $x = \frac{{ - 1}}{3}$

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