Ncert Exercises & Solutions

H⁺ ions always get associated with other atoms or molecules due to -

1.	Ionisation enthalpy of hydrogen resembles that of alkali metals
2.	Its reactivity is similar to halogens
3.	It resembles both alkali metals and halogens
4.	Loss of an electron from hydrogen atom results in a nucleus of very small size as compared to other atoms or ions. Due to small size it cannot exist free

Hint:

H^{+_{}}

is highly unstable

H⁺ ion always gets associated with other atoms or molecules. The reason is that loss of an electron from hydrogen atom results

in a nucleus of very small size as compared to other atoms or ions. Due to its small size, it cannot exist free.