Which is the strongest reducing agent among H_2O , H_2S , H_2Se , H_2Te?

1 Answer
Feb 28, 2018

H_2 Te

Explanation:

H_2 Te is strongest reducing agent among hydrides of 16th group elements because Te is least electronegative among those given in question as on the pauling scale.
Since Te is larger in size it results weaker pulling force on valence electrons. So, it can be oxidised more easily than others and this makes it the strongest reducing agent.