LiCl is covalent while NaCI is ionic why?

This question has Statement I and Statement II. Of the four choices given after the Statement, choose the one that best describes the two Statement. Statement - I : SnCl_4 is a covalent liquid, while SnCl_2 is ionic in nature Statement - II : Sn^(+4) is much more polarising than Sn^(+2)

AlCl_3 is covalent but ionises in water-why?

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

Aluminium fluoride is ionic while AlCl_3 is covalent. Why ?

C Cl_4 does not give white precipitate while NaCI solution does with AgNO_3 solution— Explain why.

Beryllium halides are covalent whereas magnesium halides are ionic. Why?

There is a considerable increase in covalent radius from N to P, while there is a small increase in covalent radius from As to Bi-why?

LiCl is soluble in organic solvents while the chlorides of other alkali metals are not explain.

Which of the following is correct regarding the covalent character of the ionic bonds ?

CO is a poisonous gas while CO_2 is not-why?