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  4. If three electrons are lost by a metal ion M+3, its final oxidation number would be

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Q. If three electrons are lost by a metal ion $M^{+3}$, its final oxidation number would be

Redox Reactions

Solution:

On losing the three electrons the ion $M^{3+}$ will further acquire a charge of $+ 3$ units, hence the total + ve charge will be $6$ units. Hence O.S. of M will be $+ 6$.