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 smal size it cannot exist free.​

Answer 1

Answer:

d lossof electron from hydrogen atom

Answer 2

Answer:

(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.​

Explanation:

Hydrogen is the first element in the periodic table. Hence it has one electron revolving it's nucleus. So H+ is basically an atom of hydrogen without it's electron.

Nuclei are very dense and extremely small, they contains more that 99.9% of the mass of an atom but they are ten thousand times smaller than an atom! So a good comparison of the nucleus to the atom is like a pea in the middle of a racetrack. Now it is practically impossible for hydrogen to stay as a nucleus. That is, H+ ions are quite unstable as itself and needs to combine with any other atoms or molecules to attain stability.

Hope this answer helps