How many times more energy is required to ionize Li+1 ion than H-atom, both being in the ground state?

4.563 times more energy.

Step-by-step explanation:

The ionization energy of hydrogen is 1312.0 kJ·mol⁻¹.

The second ionization energy of Li (the first ionization energy of Li⁺) is 7298.1 kJ·mol⁻¹.

Ratio = 7298.1/1312.0

Ratio = 5.563

The ionization energy of Li⁺ is 5.563 times as much as, or 4.563 times more than, the ionization energy of H.