A) chromium \[(Z=24)\]
B) manganese \[(Z=25)\]
C) iron \[(Z=26)\]
D) titanium \[(Z=22)\]
Correct Answer: B
Solution :
[b] Manganese shows maximum number of oxidation states because it has S unpaired electrons in 3d and also contains 2 electrons in 4s-subshell. |
\[+2,+3,+4,+5,+6,+7\] |
Other metals show the following oxidation states |
\[Cr=+2,\text{ }+3,\text{ }+4,\text{ }+5,\text{ }+6\] |
\[Fe=+\,2,\text{ }+3\] |
\[Ti=+2,\text{ }+3,+4\] |
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