ionization energies of gallium vs thallium

gallium thallium | ionization energies

gallium | 578.8 kJ/mol (kilojoules per mole) | 1979.3 kJ/mol (kilojoules per mole) | 2963 kJ/mol (kilojoules per mole) | 6180 kJ/mol (kilojoules per mole) thallium | 589.4 kJ/mol (kilojoules per mole) | 1971 kJ/mol (kilojoules per mole) | 2878 kJ/mol (kilojoules per mole)