Question

Compared with the alkaline earth metals, the alkali metals exhibit

• A. smaller ionic radii
• B. higher boiling points
• C. greater hardness
• D. lower ionisation energies

Answer 1

Answer: (D)

lower ionisation energies

Answer 2

Alkali metals have the lowest ionisation enthalpy in each period because alkali metals are largest in their respective periods and therefore, the valency electrons are loosely held by the nucleus