Page 1 of 1

ionization energy

Posted: Sat Oct 27, 2018 6:00 pm
by Vanessa Reyes_1K
Can someone please explain why removing a second electron is more difficult and why the second ionization energy of an element is always higher? Thanks!!

Re: ionization energy

Posted: Sat Oct 27, 2018 6:30 pm
by Kathryn Wilhem 1I
The further away an electron is away from the nucleus, the easier it is to remove. Once the electron that is furthest away from the nucleus is removed, the next farthest would be removed. However, this electron is closer to the atom than the first electron, making it harder to remove, and increasing the ionization energy.

Re: ionization energy

Posted: Sat Oct 27, 2018 7:02 pm
by Madeline Motamedi 4I
When you take away an electron, the electron's charge becomes positive since you have more protons than electrons. This means that the pull on those remaining electrons is higher, it wants to keep its electrons. This make it harder to lose another. This is my understanding, but anyone please correct me if I'm wrong.

Re: ionization energy

Posted: Sun Oct 28, 2018 11:06 am
by Ariel Cheng 2I
After the first electron is removed, the ratio of protons to electrons increases and therefore the pull on the remaining electrons increases. This raises the ionization energy.

Re: ionization energy  [ENDORSED]

Posted: Sun Oct 28, 2018 11:34 am
by Nicholas Le 4H
Removing the second electron from an atom is more difficult due to the higher ionization energy required to remove it. This is due to the fact that the nuclear charge has a stronger pull on the remaining electrons as there is now one less electron. Thus, with a stronger attraction due to a positive charge and one less electron, the second ionization energy will be higher.