1.

Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?

Answer»

`3d^(5)4S^(1)`
`3d^(5)4s^(2)`
`3d^(2)4s^(2)`
`3d^(3)4s^(2)`

SOLUTION :
The no of various oxidation states possible are +2, +3, +4, +5, +6 and +7.


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