The dand fblock elements - Result Question 19
####19. Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
(a) $3 d^{5} 4 s^{1}$
(b) $3 d^{5} 4 s^{2}$
(c) $3 d^{2} 4 s^{2}$
(d) $3 d^{3} 4 s^{2}$
[2009]
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Solution:
- (b) $Mn-3 d^{5} 4 s^{2}$\begin{tabular}{|l|l|l|l|l|} \hline 1 & 1 & 1 & 1 & 1 \\ \hline \end{tabular}
The no. of various oxidation states possible are $+2,+3,+4,(+5),+6,+7$.
