Question

Compare hydrogen and halogens on the basis of :
(i) physical state
(ii) ion formation
iii) valency
(iv) reaction with oxygen​

Answer 1

Answer:

Hydrogen reacts with oxygen and forms a single oxide that is stable. For example, hydrogen reacts with oxygen and gives only one product which is water and it is highly stable. On the other hand, halogens react with oxygen and give binary compounds that are mostly unstable.