Why does H+ ion always get associated with other atoms or molecules?
Correct answer: D. Loss of an electron from a hydrogen atom results in a nucleus of a very small size
- A. The ionization enthalpy of hydrogen resembles that of the alkali metals
- B. Its reactivity is similar to halogens
- C. It resembles both alkali metals and halogens
- D. Loss of an electron from a hydrogen atom results in a nucleus of a very small size
Explanation
A hydrogen ion (H⁺) is a bare proton with no electrons. This gives it an incredibly small size and a very high positive charge density. As a result, it is extremely reactive and will immediately associate with any available electron pair, such as the lone pairs on a water molecule.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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