The $$IUPAC$$ name of the compound is

Among the following compounds which can be dehydrated very easily is

Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?

Consider the following nuclear reactions
$${}_{92}^{238}M \to {}_Y^XN + 2{}_2^4He$$
$${}_Y^XN \to {}_B^AL + 2{\beta ^ + }$$
The number of neutrons in the element L is