Pure dihydrogen $(99.95\%)$ is obtained by the electrolysis of

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

State whether the following statements are True or False:
$(1)$ The metal and non-metal elements of $d$-block react with hydrogen to give molecular hydrides.
$(2)$ At normal temperature,dihydrogen reacts violently with dioxygen.

The sum of the number of neutrons and protons in the radioisotope of hydrogen is

Which hydride among the following is less stable?

Tritium undergoes radioactive decay giving