In the following reactions, products (A) and (B) respectively are:
(hot and conc.)
(dry)
Among the statements the correct ones are :
(a) Lithium has the highest hydration enthalpy among the alkali metals.
(b) Lithium chloride is insoluble in pyridine.
(c) Lithium cannot form ethynide upon its reaction with ethyne.
(d) Both lithium and magnesium react slowly with .
A metal (A) on heating in nitrogen gas gives compound B. B on treatment with gives a colourless gas which when passed through solution gives a dark blue-violet coloured solution. A and B respectively, are :