Question

Why Ionization enthalpy of calcium is higher than potassium

Answer 1

Answer:

For calcium, we have a much larger atom because we have more electrons and the electrons are at energy levels farther from the nucleus. As a result the effective nuclear charge felt by those outer electrons is less than the charge... The first ionization energy of potassium is 419 kJ/mol while calcium's is 376 kJ/mol.