An electrovalent compound is made up of

Which of the following compounds is the least ionic?

Two elements $X$ and $Y$ have the following electron configurations:
$X = 1s^2, 2s^2 2p^6, 3s^2 3p^6, 4s^2$
$Y = 1s^2, 2s^2 2p^6, 3s^2 3p^5$
The compound formed by the combination of $X$ and $Y$ is:

The most predominantly ionic compounds will be obtained from the combination of elements belonging to

The ionization of $AlCl_3$ in aqueous solution occurs because ........

$HCl$ gas is covalent and $NaCl$ is an ionic compound. This is because