Isoelectronic Atoms

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chrisdinkel_4E
Posts: 33
Joined: Fri Sep 28, 2018 12:17 am

Isoelectronic Atoms

Postby chrisdinkel_4E » Thu Oct 25, 2018 9:13 pm

I am confused by if two different atom have the same valence (i.e. one atom gain/lost an electron) why they wouldn't have the same structural size.
It makes sense that they would have very different properties.

Nikki Bych 1I
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: Isoelectronic Atoms

Postby Nikki Bych 1I » Thu Oct 25, 2018 9:19 pm

They are not the same size because there is a different attraction to the nucleus. For example, a cation (one less electron) is smaller because there are less electrons for the positive nucleus to pull on, pulling in the electrons tighter and making the atomic radius smaller.

chrisdinkel_4E
Posts: 33
Joined: Fri Sep 28, 2018 12:17 am

Re: Isoelectronic Atoms

Postby chrisdinkel_4E » Thu Oct 25, 2018 9:21 pm

Ahh thanks!

zoepamonag4C
Posts: 30
Joined: Fri Sep 28, 2018 12:28 am

Re: Isoelectronic Atoms

Postby zoepamonag4C » Thu Oct 25, 2018 9:25 pm

I think that even though the number of electrons is the same, the number of protons is still different. and the protons pull the electrons closer to the nucleus --> different radii

Eunice Lee 1A
Posts: 60
Joined: Wed Oct 03, 2018 12:16 am

Re: Isoelectronic Atoms

Postby Eunice Lee 1A » Fri Oct 26, 2018 7:08 am

Atoms of different elements still have their respective number of protons in the nucleus. Properties of elements depend on their nucleus. Electrons mainly affect bonding.


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