The first $I.P.$ of $Mg$ is ...... than $Al$.

Ionization energy increases in the order

The successive $5$ ionisation energies of an element are $800, 2427, 3658, 25024$ and $32824 \ kJ/mol$,respectively. By using the above values,predict the group in which the above element is present:

Starting from the $1^{st}$,the successive ionization potentials of an element are respectively $5.98, 18.8, 28.4, 120.1, 154 \ eV$. The element is

The ionization energy will be higher when the electron is removed from

What is the definition of ionization energy for an atom?