According to the calssical concept, which of the following cannot be termed as reduction?
A
Removal of electropositive element
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B
Addition of Hydrogen
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C
Removal of Oxygen
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D
Removal of electronegative element.
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Solution
The correct option is A Removal of electropositive element The phenomenon which are termed as reduction according to the classical concept are: Addition of Hydrogen Removal of Oxygen Gain of electropositive element (like Silver) Removal of an electronegative element (like Fluorine)
Electronic concept of reduction :
Addition or gain of electrons is termed as reduction. Cu2++2e−⟶Cu(s) Here Cu2+ is reduced to Cu when it loses 2e−