The energy needed to change a He⁺ ion in the ground state into a He²⁺ ion is A) 13.6 eV B) 54.4 eV C) 112.4 eV D) 92.9 eV E) 27.2 eV

Question

Quizplus · Accepted Answer

The energy needed to ionize a helium atom from the ground state (He⁺) to the next ionization state (He²⁺) is equivalent to the energy needed to remove an electron from a singly ionized helium ion (He+). This energy is four times the ionization energy of hydrogen (13.6 eV) due to the Z^2 dependence in the ionization energy formula, where Z is the atomic number. For helium (Z=2), this results in 4 * 13.6 eV = 54.4 eV.

The Energy Needed to Change a He+ Ion in the Ground

The Energy Needed to Change a He⁺ Ion in the Ground