Covalent Character of Ionic Bonds and Polar Character of Covalent Bond

${\mathrm{AlCl}}_3$ is an electron deficient compound but ${\mathrm{AlF}}_3$ is not. This is because

Assertion $\left(\mathrm{A}\right):$ Covalent character follows: $\mathrm{NaCl}<{\mathrm{MgCl}}_2<{\mathrm{BeCl}}_2<\mathrm{LiCl}$
Reason $\left(\mathrm{R}\right):$ According to Fajan's rules, covalent character of ionic compounds increases with decrease in size of cation.

Which of the following compounds is polar ?

Which of the alkaline earth metal halides given below is essentially covalent in nature?

Amongst $\mathrm{LiCl}, \mathrm{RbCl}, {\mathrm{BeCl}}_2 \text{and} {\mathrm{MgCl}}_2$, the compounds with the greatest and the least ionic character, respectively, are.

The most polarisable ion among the following is.

Choose the correct statement with reference to water and hydrogen peroxide. 

Select the correct pair of ions having highest $\%$ of polarising power and polarisability nature.

Which of the following order is incorrect ?

Select correct orders of the properties given below :

Which of the following order is incorrect about solubility ?

Metal hydrides are ionic, covalent or molecular in nature. Among $\mathrm{LiH},\mathrm{NaH},\mathrm{KH},\mathrm{RbH},\mathrm{CsH}$, the correct order of increasing ionic character is :

According to Fajan's rule, ionic character increases for :

Compound which is maximum soluble in organic solvent is :-

If $\mathrm{NaF}$ is ionic, then $\mathrm{RbF}$ is :-

Polarisation is not a cause of colour/colour intensity in which of the following set of species:-

The compound which contain only ionic bond :-

Select the order which is correct?