Isoelectronic  [ENDORSED]

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Mia Navarro 1D
Posts: 52
Joined: Fri Sep 29, 2017 7:04 am


Postby Mia Navarro 1D » Sat Nov 11, 2017 1:16 am

One of the exam questions regarded finding elements that were not isoelectronic to F-. Would atoms that had the electron configuration equivalent to [He] be acceptable? Why/why not?

Naama 1A
Posts: 20
Joined: Fri Sep 29, 2017 7:04 am

Re: Isoelectronic

Postby Naama 1A » Sat Nov 11, 2017 1:22 pm

Isoelectronic means that they have the same number of electrons. Something isoelectronic to F- would have 10 electrons. Anything that doesn't have 10 electrons is therefore not isoelectronic.

Kevin Ru 1D
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

Re: Isoelectronic  [ENDORSED]

Postby Kevin Ru 1D » Sat Nov 11, 2017 3:38 pm

To clarify the above post. Isoelectronic atoms or ions have both the same number of valence electrons (8 in this case for F-) and the same electronic structure. As [He] only has 2 valence electrons it cannot be isoelectronic to F-. Hope that helps!

Matthew 1C
Posts: 47
Joined: Fri Sep 29, 2017 7:06 am

Re: Isoelectronic

Postby Matthew 1C » Sat Nov 11, 2017 5:35 pm

Since it needs to have the same nuimber of valence electrons, something isoelectronic with F- would have 10 valence electrons and have the same electron configuration of Ne, such as Na+ or O2-

Diane Bui 2J
Posts: 61
Joined: Sat Jul 22, 2017 3:00 am

Re: Isoelectronic

Postby Diane Bui 2J » Sat Nov 11, 2017 6:37 pm

Also, if I'm not mistaken, the test did ask for an ion that was isoelectronic so choosing a parent atom like "Ne" would've been incorrect.

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