Question

Why ionizaion energy increase across a period?

Answer 1

Answer:

Across a period from left to right, the ionisation energy increases. This is due to the increase in nuclear charge having a greater pull on the electrons and therefore more energy is required to remove electrons.

Explanation:

Answer 2

Answer:

Across a period from left to right, the ionisation energy increases. This is due to the increase in nuclear charge having a greater pull on the electrons and therefore more energy is required to remove electrons.