What type of inter molecular force is present between magnesium chloride and water?

Xenon crystallises in fcc lattice and the edge length of unit cell is 620 pm. What is the radius of Xe atom?

How many electrons are involved in the reaction, when $$0.40 \mathrm{~F}$$ of electricity is passed through an electrolytic solution?

Which among the following lanthanoids, shows only +3 oxidation state?