Choose the correct statements(s) among the following. I. Alkali metal is highly reactive. II. Alkali metal has lowest ionization enthalpy among their respective period. III. Ionization energy of alkali metals increases top to bottom. IV. Superoxide ions is stable only in the presence of large cations.
A.I and II
B.I, II and III
C.II and IV
D.I, II and IV✓ Correct
Explanation
Statement III is incorrectly written as ionization enthalpy of alkali metals decreases top to bottom.