# The element with which of the following outer electron configuration may exhibit the

Question:

The element with which of the following outer electron configuration may exhibit the largest number of oxidation states in its compounds :

1. $3 \mathrm{~d}^{7} 4 \mathrm{~s}^{2}$

2. $3 \mathrm{~d}^{8} 4 \mathrm{~s}^{2}$

3. $3 \mathrm{~d}^{5} 4 \mathrm{~s}^{2}$

4. $3 \mathrm{~d}^{6} 4 \mathrm{~S}^{2}$

Correct Option:

Solution:

$\mathrm{Mn} \longrightarrow \mathrm{Mn}^{+7}$