Poorest reducing agent among following is
(1) atomic hydrogen
(2) nascent hydrogen
(4) all have same reducing strength
Related Videos :-
nascent hydrogen - newly born hydrogen is not stable form of hydrogen, it is very reactive and immediately reduce the metal or convert into molecular hydrogen.
hydrogen molecule is most stable form of hydrogen in free state. This is because the energy of hydrogen molecule is very high, 104 Kcal/mole.
A hydrogen atom is electrically neutral but the presence of unpaired electron makes it highly reactive. The hydrogen atom can either lose the electron and convert into a proton or accpet a second electron and acquire stable duplet configuration like that of Helium. Either way, the atomic hydrogen never stays stable with its unpaired electron which can act like a free radical.