Question

what is ionisation enthalpy explin​

Answer 1

Answer:

ionization enthalpy is the energy required to remove an electron from a neutral atom. As we move from left to right in the periodic table the ionization enthalpy, in the same period, increases. And as we move from top to bottom in a group, the ionization enthalpy decreases.

Answer 2

Answer:

Ionization Enthalpy is defined as the amount of energy an isolated gaseous atom would take to lose an electron in its ground state. Whenever an electron is expelled from an atom, it takes a specific amount of energy to expel it, hence the enthalpies of chemical elements for ionisation are always optimistic.