Second and First Ionization Energy

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Sarah Fatkin 4I
Posts: 71
Joined: Fri Sep 28, 2018 12:27 am

Second and First Ionization Energy

Postby Sarah Fatkin 4I » Sat Nov 03, 2018 10:14 pm

Hi Chemistry Community! Why is the second ionization energy larger than the first ionization energy? Thanks!

904936893
Posts: 62
Joined: Fri Sep 28, 2018 12:29 am

Re: Second and First Ionization Energy

Postby 904936893 » Sat Nov 03, 2018 11:27 pm

Ionization energy is the energy it takes to remove an electron from an element. Once one electron is removed, the element has an overall positive charge. Electrons are negative, so they are therefore more attracted to this positively charged element, making them harder to remove.

Saman Andalib 1H
Posts: 73
Joined: Fri Sep 28, 2018 12:16 am

Re: Second and First Ionization Energy

Postby Saman Andalib 1H » Sat Nov 03, 2018 11:31 pm

After the first ionization energy, the element has now become a charged ion which has a high attraction between the protons in the nucleus and the electrons. Attempting to remove another electron is much more difficult than removing the first (higher ionization energy) because you now have to counteract the greater electron affinity of the charged atom


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