Question

what is ionisation energy???

simple definition needed
I will mark brainliest for the one who answers first​

Answer 1

Answer:

In physics and chemistry, ionization energy or ionisation energy, denoted Eᵢ, is the minimum amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated neutral gaseous atom or molecule.

Explanation:

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Answer 2

Answer:

Ionization energy is simple terms can be described as a measure of the difficulty in removing an electron from an atom or ion or the tendency of an atom or ion to surrender an electron.