The ionisation energy of hydrogen is high as compared to alkali metals because of

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

First ionisation energy of copper is higher than those of alkali metals, while second and third ionisation energies are lower. Explain.

Explain whether the ionisation enthalpy higher, for alkali metal as compare to alkaline earth metal.

Compare three properties of hydrogen which resembles the alkali metals.

Why is second ionisation energy of alkali metals higher than alkaline earth metals?

Hydrogen has high ionization energy than alkali metals, due to its:

The ionisation energy of alkali metals decreases from Li to Cs bacause

The ionisation energy of alkali metals decreases from Li to Cs bacause