Question

What is ionization energy?

A. The minimum energy required to remove one electron from an atom.
B. The maximum energy required to remove one electron from an atom.
C. The maximum energy required to move one electron to the valence shell.
D. The minimum energy required to remove one electron from another electron.

Answer 1

The answer is the maximum energy required to remove one electron from a atom

Answer 2

C. The maximum energy required to move one electron to the valence shell.