Question

why ionisation power decrease along periods?​

Answer 1

Explanation:

As the atomic radius decreases, it becomes harder to remove an electron that is closer to a more positively charged nucleus. ... They experience a weaker attraction to the positive charge of the nucleus. Ionization energy increases from left to right in a period and decreases from top to bottom in a group.

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Answer 2

Answer:

Along periods ionisation power decreases because of increase in size of the atom.

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