Why does H+ ion always get associated with other atoms or molecules?

Question

Why does H+ ion always get associated with other atoms or molecules? (A) Ionisation enthalpy of hydrogen resembles that of alkali metals (B) Its reactivity is similar to halogens (C) It resembles both alkali metals and halogens (D) 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

Tardigrade Admin · Accepted Answer

Loss of an electron from H atom results in H ion having extremely small size (∼ 1.5 × 10-3 pm) as compared to normal atomic and ionic sizes of 50-200 pm. As a consequence, H+ does not exist freely and is always associated with other atoms or molecules.

Q. Why does $H^{+}$ ion always get associated with other atoms or molecules?

Ionisation enthalpy of hydrogen resembles that of alkali metals

Its reactivity is similar to halogens

It resembles both alkali metals and halogens

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

Loss of an electron from $H$ atom results in $H$ ion having extremely small size $(\sim 1.5 \times 1 0^{- 3} p m$ ) as compared to normal atomic and ionic sizes of $50$ - $200 p m$ . As a consequence, $H^{+}$ does not exist freely and is always associated with other atoms or molecules.

Q. Why does H+ ion always get associated with other atoms or molecules?