1. Tardigrade
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  3. Chemistry
  4. The spin only magnetic moment value of Cr 3+ ion is √x B.M. The value of ' x ' is .

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Q. The spin only magnetic moment value of $Cr ^{3+}$ ion is $\sqrt{x}$ $B.M$. The value of ' $x$ ' is ____.

The d-and f-Block Elements

Solution:

$Cr ^{3+}: 3 d ^{3}$
Spin only formula, $\mu=\sqrt{n(n+2)} B.M$.
Here $n =3, $
$\therefore \mu=\sqrt{3(3+2)}=\sqrt{15} B.M$.
$\therefore x=15$