Alumina $(Al_2O_3)$ is insoluble in water because

The structure of $PCl_{5}$ in the solid state is

Intermolecular forces are forces of attraction and repulsion between interacting particles that will include :
$A$. dipole-dipole forces $B$. dipole-induced dipole forces $C$. hydrogen bonding $D$. covalent bonding $E$. dispersion forces
Choose the most appropriate answer from the options given below :

The energy that opposes the dissolution of an ionic solid in a solvent is:

The structures of beryllium chloride in solid state and vapour phase,are:

$I_2$ molecules are held in the solid lattice by $...................$