<u>Answer:</u> The correct answer is ionization energy.
<u>Explanation:</u>
Ionization energy is defined as the amount of energy required to remove an electron from an isolated gaseous atom to form a positive ion.
Electronegativity is defined as the property of an atom to attract the shared pair of electron towards itself when a bond is being formed.
Electron affinity is defined as the amount of energy released when an electron is added to an isolated gaseous atom to form a negative ion.
Polarity is defined as the separation of electric charge with in the molecule. This leads to the formation of positively charge end and a negatively charged end.
From the above information, the correct answer is ionization energy.
