Question

Why does \[\ce{H+}\] ion always get associated with other atoms or molecules?

पर्याय

• 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 smal size it cannot exist free.

Answer 1

Loss of an electron from hydrogen atom results in a nucleus of very small size as compared to other atoms or ions. Due to smal size it cannot exist free.

Explanation:

Loss of the electron from hydrogen atom results in nucleus size \[\ce{(H+)}\] of 1.5 × 10^–3. This is extremely small as compared to normal atomic and ionic sizes of 50 to 200 pm. As a consequence, \[\ce{H+}\] does not exist freely and is always associated with other atoms or molecules.