Question
Which of the following statements is correct regarding hydrogen?
A.
Hydrogen shows + 1 and - 1 oxidation states.
B.
Hydrogen is never liberated at anode.
C.
Hydrogen has same ionisation enthalpy as that of alkali metals.
D.
Hydrogen has same electronegativity as that of halogens.
Answer :
Hydrogen shows + 1 and - 1 oxidation states.
Solution :
Hydrogen has + 1 oxidation state in compounds with more electronegative elements e.g., $$HF.$$ It has - 1 oxidation state in compounds with more electropositive elements e.g., $$NaH.$$