Question

Oxidation is a loss of electrons.

• A. True
• B. False
• C. Ambiguous
• D. None of these

Answer 1

The correct option is A True

Oxidation is loss of electrons by an atom or an ion or a molecule.
This results in increase in the oxidation number or positive charge on the metal atom.
For example, sodium metal loses an electron to form sodium ion.

$Na-e^{-}\to N{a}^{+}$

The oxidation number of sodium increases from $0$ to $+1$.