M + 3 ion loses 3 e − . Its oxidation number will be Options: A . &nbsp 0 B . &nbsp +3 C . &nbsp +6 D . &nbsp -3

M+3 ion loses 3e−. Its oxidation number will be

Discussion Forum : Redox Reactions

Question -

$M^{+ 3}$ ion loses $3 e^{-}$ . Its oxidation number will be

Options:

A . 0

B . +3

C . +6

D . -3

Answer: Option C
:
C

Looking at the ion $M^{3 +}$ - clearly the oxidation number is +3.
Further - $M^{3 +}$ loses 3 electrons to be come $M^{6 +}$ .
Hence - the new oxidation number is 6.

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