Exceptions

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Brynne Burrows 3K
Posts: 52
Joined: Thu Jul 25, 2019 12:16 am

Exceptions

Postby Brynne Burrows 3K » Wed Oct 23, 2019 8:22 pm

What are the exceptions to the trends in the periodic table when talking about ionization energy?

bellaha4F
Posts: 104
Joined: Wed Sep 18, 2019 12:20 am

Re: Exceptions

Postby bellaha4F » Wed Oct 23, 2019 8:26 pm

the ionization energies decrease down a group and increase across a period. however, it's only for gases

erica thompson 4I
Posts: 55
Joined: Wed Sep 18, 2019 12:21 am

Re: Exceptions

Postby erica thompson 4I » Wed Oct 23, 2019 9:54 pm

It's also interesting to note that elements with low ionization energies typically form cations, which are typically metals. Because metals are grouped on the left side of the periodic table, you can use this as a memory clue to remind you that the ionization energy increases as you move across a period.

Kishan Shah 2G
Posts: 132
Joined: Thu Jul 11, 2019 12:15 am

Re: Exceptions

Postby Kishan Shah 2G » Wed Oct 23, 2019 10:04 pm

As the above two replies stated, ionization energies increase as you move toward the bottom left of the periodic table. This is due to the fact that these electrons are further away from the nucleus so they are more easily removable, and the fact that these elemental atoms have an inclination to lose electrons so they can form cations and reach a stable noble gas configuration. I currently do not know of any exceptions to this rule.


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