What is the correct stability order of $KO_2$, $RbO_2$, and $CsO_2$?

Which of the following is the reason why sodium metal conducts electricity?

Which of the following reactions occurs when $AgNO_3$ is heated above its melting point?

Which of the following properties is $NOT$ an anomalous property of $Li$?

In the reaction $M + O_2 \to MO_2$ (superoxide),the metal $M$ is

Comment on each of the following observations:
$(a)$ The mobilities of the alkali metal ions in aqueous solution are
$Li^{+} < Na^{+} < K^{+} < Rb^{+} < Cs^{+}$
$(b)$ Lithium is the only alkali metal to form a nitride directly.
$(c)$ $E^{\circ}$ for $M^{2+}_{(aq)} + 2e^{-} \longrightarrow M_{(s)}$ (where $M = Ca, Sr$ or $Ba$) is nearly constant.