Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens?

Options

A. The ionisation energy of hydrogen is too high for group of alkali metals, but too low of halogen group
B. Hydrogen can form compounds with all other elements
C. Hydrogen is much lighter element than the alkali metals or the halogens
D. None of the above

Answer

A

Explanation

The ionisation energy of hydrogen is too high for group of alkali metals, but too low for halogen group.