Question

ionisation potential values depend on (a) atomic size (b) nuclear pull .Explain. ​

Answer 1

Atomic size: The greater the atomic size, lesser will be the force of attraction by the nucleus. As the electrons in the outermost shell will lie far away from the nucleus, their removal will be easy that means the value of ionization potential will be less. So with the increase in atomic radius, ionization potential decreases.

Nuclear charge: The greater the nuclear charge more will be the force of attraction on the electrons. This means that the nucleus will firmly hold the electrons and more energy will be required to remove it from the atom.