Hydrogen has higher ionization energy than alkali metals,due to its

What do you understand by $(i)$ electron deficient,$(ii)$ electron precise,and $(iii)$ electron rich compounds of hydrogen? Provide justification with suitable examples.

Dihydrogen reacts with dioxygen $(O_2)$ to form water. Write the name and formula of the product when the isotope of hydrogen which has one proton and one neutron in its nucleus is treated with oxygen. Will the reactivity of both the isotopes be the same towards oxygen? Justify your answer.

Which of the following hydrides is electron deficient?

The hydride ions $({H^{-}})$ are isoelectronic with

Write the names of the isotopes of hydrogen. What is the mass ratio of these isotopes?