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Variable Oxidation States

What may be t...

Question

What may be the stable oxidation state of the transition element with the following d-electron configuration in the ground state of their atoms: $3 d^{3}, 3 d^{5}, 3 d^{8}$ and $3 d^{4}$ ?

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Solution

Configuration Stable oxidation state
$3 d^{3}$ vanadium +2, +3, +5
$3 d^{5}$ manganese +2, +7
$3 d^{8}$ nickel +2, +4
$3 d^{4}$ chromium +2, +3, +6

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