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Isoelectronic
Posted: Sat Nov 11, 2017 1:16 am
by Mia Navarro 1D
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?
Re: Isoelectronic
Posted: Sat Nov 11, 2017 1:22 pm
by Naama 1A
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.
Re: Isoelectronic [ENDORSED]
Posted: Sat Nov 11, 2017 3:38 pm
by Kevin Ru 1D
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!
Re: Isoelectronic
Posted: Sat Nov 11, 2017 5:35 pm
by Matthew 1C
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-
Re: Isoelectronic
Posted: Sat Nov 11, 2017 6:37 pm
by Diane Bui 2J
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.