The energy of a one-electron atom is given by E = -(2.18 *10^-¹⁸ J) $$\left( \frac { z } { n } \right) ^ { 2 }$$ where Z is the atomic number of the element. Which of the following one-electron ions has the largest ionization energy? A) Li²⁺ B) Be³⁺ C) He⁺ D) B⁴⁺ E) C⁵⁺

Question

Quizplus · Accepted Answer

The ionization energy is the energy required to remove an electron from an atom or ion. The ionization energy increases as the atomic number increases and as the number of electrons in the atom or ion decreases. Therefore, the one-electron ion with the largest ionization energy is C⁵⁺, which has the highest atomic number and the fewest electrons.

The Energy of a One-Electron Atom Is Given by E (zn)2\left( \frac { z } { n } \right) ^ { 2 }(nz​)2

The Energy of a One-Electron Atom Is Given by E $\left( \frac { z } { n } \right) ^ { 2 }$