Question

what is ionisation Enthalpy?? ​

Answer 1

The amount of energy required to realise an electron from outermost cell of an atom called it's ionisation energy .

Answer 2

Explanation:

$\huge\mathfrak{Ionisation\:Enthalpy}$

➠ Ionization Enthalpy of elements is the amount of energy that an isolated gaseous atom requires to lose an electron in its ground state. Losing of electrons results in the formation of cations.

$\bold{Ionisation\:Enthalpy\:depends\:upon\:two\:factors}$

➠The force of attraction between electrons and the nucleus.

➠ The force of repulsion between electrons.