Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors which one is most important in this respect?
(i) Its tendency to lose an electron to form a cation.
(ii) Its tendency to gain a single electron in its valence shell to attain stable electronic configuration.
(iii) Its low negative electron gain enthalpy value.
(iv) Its small size.

Answers (1)

The answer is the option (ii) Its tendency to gain a single electron in its valence shell to attain stable electronic configuration.

 

Hydrogen resembles halogens as halogens with the configuration of ns^{2} np^5in the seventeenth group, also harbour the ability to accept one electron and configure as an inert gas. Similarly, Hydrogen also can accept an electron to configure itself like helium.

 

H \rightarrow He

1s^1       1s^2

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