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Tatiana R Dis 3E
Posts: 20
Joined: Fri Sep 29, 2017 7:07 am


Postby Tatiana R Dis 3E » Thu Dec 07, 2017 1:35 pm

What is this and what elements/ions ARE isoelectrinic with fluoride ion F^-?

Alexander Peter 1F
Posts: 20
Joined: Wed Jun 28, 2017 3:00 am

Re: Isoelectrinic

Postby Alexander Peter 1F » Thu Dec 07, 2017 2:04 pm

To my understanding, isoelectronic ions are ions with the same number of electrons. For example, F- and Na+ as they both have 10 electrons.

Cyianna 2F
Posts: 34
Joined: Wed Nov 16, 2016 3:04 am

Re: Isoelectrinic

Postby Cyianna 2F » Thu Dec 07, 2017 7:12 pm

Isoelectronic ions consist of two molecules that have both the same amount of atoms and valence electrons. In Na+ and F-, since Na loses an electron, it goes into group 18, where it has 8 valence electrons and 10 atoms rather than 11. For F-, adding an electron makes F go into group 18 as well. So then F ends up having 8 valence electrons rather than 7, and 10 total atoms rather than 9.

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