The property defined as the energy required to remove one electron from an atom in the gaseous state is
A)atomic number.
B)electron affinity.
C)ionization energy.
D)electronegativity.
E)none of the above

Question

Quizplus · Accepted Answer

The property defined in the question is ionization energy. It is the amount of energy required to remove one electron from an atom in its gaseous state. The atomic number is the number of protons present in the nucleus of an atom. Electron affinity is the energy change that occurs when an electron is added to a neutral atom to form a negative ion. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. Hence, option C, ionization energy is the correct answer.

The Property Defined as the Energy Required to Remove One