Anhydrous $AlCl_3$ is covalent; however,when it is dissolved in water,hydrated ionic species are formed. This transformation is owing to

Electrovalent bond formation depends on

The correct statement for the molecule,$CsI_3$ is:

Which type of compounds show high melting and boiling points?

In the formation of $NaCl$ from $Na$ and $Cl$,which of the following occurs?

The electronic configurations of four elements $L$,$P$,$Q$,and $R$ are given as: $L (1s^2, 2s^2 2p^4)$; $Q (1s^2, 2s^2 2p^6, 3s^2 3p^5)$; $P (1s^2, 2s^2 2p^6, 3s^1)$; $R (1s^2, 2s^2 2p^6, 3s^2)$. The formulas of the ionic compounds that can be formed between these elements are: