The ionisation energy of hydrogen is higher than alkali metals. Pick out the correct reason for the above statement.

The ionisation energy of hydrogen is higher than alkali metals. Pick o

1.	The ionisation energy of hydrogen is higher than alkali metals. Pick out the correct reason for the above statement.
Answer» Because of SMALLER SIZE of H. Presence of `le^-` in OUTERMOST shell. Presence of ONE proton in its nucleus. Absence of neutrons. Answer :A