HI KARAN ,
Amount of energyrequired to remove an electronfrom an isolated atomor molecule is known as ionisation potential. There is an ionization potential for each successive electron removed, though that associated with removing the first electron is used. The ionization potential of an elementis a measure of its ability to enter into chemical reactions requiring ionformation or donation of electrons and is related to the nature of the chemical bonding in the compounds formed by elements.
si unit :kilojoules per mol (KJ/mol)
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