First, second, third, etc. Ionization energy

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Austin Clack
Posts: 29
Joined: Fri Sep 28, 2018 12:17 am

First, second, third, etc. Ionization energy

Postby Austin Clack » Wed Nov 07, 2018 4:14 pm

We've talked extensively in lecture about ionization energy trends but I was hoping someone could clarify the difference between first ionization energy and the others that follow. Does the relative value change moving from different levels of ionization energy?

Megan Wong 4E
Posts: 32
Joined: Fri Sep 28, 2018 12:28 am

Re: First, second, third, etc. Ionization energy

Postby Megan Wong 4E » Wed Nov 07, 2018 5:02 pm

The first ionization energy is the energy required to remove 1 electron from an atom, the second ionization energy is the energy required to removed 2 electrons, and so forth.

I believe that ionization energies increase as you remove more electrons. For instance, the second ionization energy will always be higher than the first ionization energy.

Kate Chow 4H
Posts: 61
Joined: Fri Sep 28, 2018 12:28 am

Re: First, second, third, etc. Ionization energy

Postby Kate Chow 4H » Thu Nov 08, 2018 3:29 pm

2nd ionization energy is higher than 1st ionization energy because it's always harder (takes more energy) to remove an electron from an already positively charged ion.

monikac4k
Posts: 56
Joined: Fri Sep 28, 2018 12:25 am

Re: First, second, third, etc. Ionization energy

Postby monikac4k » Thu Nov 08, 2018 4:54 pm

Adding onto the other two comments, sometimes you will notice that at a certain point, the ionization energy from one electron to the next will make a very large jump for an atom. Take magnesium for example. Just as the others had said, the second electron requires more energy to be removed in comparison to the first one. However, the third ionization energy for magnesium will be much larger than the other two. This happens when an atom is ionized down to a form similar to that of a noble gas and then another electron is removed. Since the noble gas configuration is stable and preferred, the 3rd ionization energy is much larger than the 2nd for magnesium.

Nick Bazett 1F
Posts: 32
Joined: Fri Sep 28, 2018 12:15 am

Re: First, second, third, etc. Ionization energy

Postby Nick Bazett 1F » Sat Nov 10, 2018 9:45 pm

Ionization energy increases from left to right on the periodic table.


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