Among the following oxides,which has the maximum lattice energy?

Consider the Born-Haber cycle for the formation of an ionic compound given below and identify the compound $Z$ formed.
$M_{(s)}$ $\xrightarrow{\Delta H_1} M_{(g)}$ $\xrightarrow{\Delta H_2} M^{+}_{(g)}$
$\frac{1}{2} X_{2(g)}$ $\xrightarrow{\Delta H_3} X_{(g)}$ $\xrightarrow{\Delta H_4} X^{-}_{(g)}$
$M^{+}_{(g)} + X^{-}_{(g)} \xrightarrow{\Delta H_5} Z$

In a crystal,cations and anions are held together by

Which of the following is not correct regarding the properties of ionic compounds?

Which of the following compounds has the least covalent character in its $P-H$ bond?

Which of the following statements is true for the $CsBr_3$ molecule?