Question

Alkali metals are powerful reducing agents because ______.

Options

• they are metals

• they are monovalent

• their ionic radii are large

• their ionisation energies are low

Answer 1

Alkali metals are powerful reducing agents because their ionisation energies are low.

Explanation:

Alkali metals contain only one valence electron in their outermost shell. Because of the low ionisation enthalpy, it oxidises to decrease other chemicals.