Neodymium show `+2, +3, and +4` oxidation state of `+4` oxidation state. The most oxidising state known is aqueous solution is
A. `+2`
B. `+3`
C. `+4`
D. none of these

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1 Answers

Correct Answer - B
We know that, +3 oxidation is common in all series. Stable of +3 O.S. depends upon high hydration energy, high lactic energy and high I.P.
`Nd^(2+)` - has configuration `4f^(4)`
`Nd^(4+)-` has configuration `4f^(2)`
Hence `+2,+4` oxidation states are unstable in Nd in aqueous solution.

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