Question

Check my answer?
Which of the following possesses the highest first ionization energy value?

fluorine

chlorine

oxygen

sulfur

Answer 1

I think it is a, but not 100% sure.

Answer 2

It is a, brother. That is because accross every period, the atomic radius decreases and as you can see in the periodic table, F is to close to the end, making it the smallest aom, plus, the smaller the atom is, the more the outtermost shell is close to the nucleus, making a very better communication or attraction between a positive charged centre )nucleus) and a negative center (electron from the shells). The reason why it become hard to remove the electron, because it is to attracted.

Answer 3

Thank you, and again thank you for also explaining!