Question

in a period no. of shells are equal in atoms of the elements . then what is the reason for the difference in ionisation energy​

Answer 1

Answer:

it generally increases cause electrons are added in the same shell

Explanation:

this means that with the addition of es protons are also added with the screening effect reamianing same ( 3rd principal quantum number) so the increase in nuclear charge and decrease in atomic radiI is the reason for increasing ionization energy.