Question

Fill in the blanks from the choices given in brackets.

The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ______ (electron affinity, ionization potential, electronegativity).

Answer 1

Ionization energy:-

1. It is the energy required to remove an electron from the valence shell of an atom in its isolated gaseous state in order to form a cation.
2. Ionization energy decreases across a period from left to right and increases on going down the group.

Thus, the energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ionization potential.