Question -M+3 ion loses 3e−. Its oxidation number will be
Options:
A .  0
B .  +3
C .  +6
D .  -3
Answer: Option C : C Looking at the ion M3+ - clearly the oxidation number is +3. Further -M3+ loses 3 electrons to be comeM6+. Hence - the new oxidation number is 6.
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