Question

The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition element, which shows highest magnetic moment.

• A. $3d^7$
• B. $3d^5$
• C. $3d^8$
• D. $3d^2$

Answer 1

Answer: (B)

$3d^5$

In 3d subshell there are 5 orbitals.

Magnetic moment of elements depends on no of unpaired electrons.

For the magnetic moment to be maximum, it should have maximum unpaired electrons.

So, 5 unpaired electrons in 5 d-orbitals of 3d making $3d^5$ maximum magnetic moment.