Question

18. What are the various factors due to which
the ionisation enthalpy of the main group elements
tends to decrease down the group ?​

Answer 1

Explanation:

As atomic size increases down the group due to new addition of new higher energy shells, the force that binds the electron with nucleus decreases

Therefore ionisation enthalpy decreases down the group

Answer 2

Answer:

your answer is in the attachment

Explanation:

hope it's help you XD