Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors which one is most important in this respect ?

Options

A. Its tendency to lose an electron to form a cation
B. Its tendency to gain a single electron in its valence shell to attain stable electronic in its configuration
C. Its low negative electron gain enthalpy value
D. Its small size

Answer

B

Explanation

Hydrogen has tendency to gain a single electron in its valence shell to form `H^(-)` ions. It attains stable electronic configuration by completing their octet.