Question

The paramagnetic moment $O_2^{-}$ is:

• A. $1.732$
• B. $3$
• C. $1.5$
• D. $2.5$

Answer 1

The correct option is A $1.732$

$O_2^{-}$ has one unpaired electron.

Magnetic moment is caculated as $\sqrt{n(n+2)}$ B.M.

Where, $n=$ no. of unpaid electron.

$\therefore \sqrt{1(1+2)}=\sqrt{3}$ B.M $=1.732$ B.M.