Isoelectronic examples

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Brenda Tran 3C
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Joined: Fri Sep 24, 2021 6:32 am

Isoelectronic examples

Postby Brenda Tran 3C » Mon Oct 25, 2021 10:47 pm

Hello! Can someone explain why Na+, Mg2+, and F- are isoelectronic?

Neelaj Das 3I
Posts: 103
Joined: Fri Sep 24, 2021 5:35 am

Re: Isoelectronic examples

Postby Neelaj Das 3I » Mon Oct 25, 2021 10:57 pm

These atoms are all isoelectronic because they all have the same number of electrons despite being different elements. Sodium's atomic number is 11, so in its ground state it has 11 electrons. However, due to the positive 1 charge, Na+ actually has 10 electrons. If you count the electrons for Mg2+ and F- in a similar fashion, you can see that they also each have 10 electrons. This makes these atoms isoelectronic.

Christina Gigoux 1D
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Joined: Fri Sep 24, 2021 5:11 am

Re: Isoelectronic examples

Postby Christina Gigoux 1D » Tue Oct 26, 2021 1:27 pm

Isoelectronic atoms are atoms with the same number of electrons and therefore the same electron configurations. An important thing to mention with isoelectronic atoms is that this doesn't mean that they have the same properties. Although Na+, Mg2+, and F- all have 10 electrons, they have different numbers of protons and neutrons, causing their properties to be different.

Jocelynn Franco 1L
Posts: 51
Joined: Fri Sep 24, 2021 7:32 am

Re: Isoelectronic examples

Postby Jocelynn Franco 1L » Tue Oct 26, 2021 2:37 pm

Neelaj Das 1I wrote:These atoms are all isoelectronic because they all have the same number of electrons despite being different elements. Sodium's atomic number is 11, so in its ground state it has 11 electrons. However, due to the positive 1 charge, Na+ actually has 10 electrons. If you count the electrons for Mg2+ and F- in a similar fashion, you can see that they also each have 10 electrons. This makes these atoms isoelectronic.


So they're isoelectronic to one another? Is that how Isoelectronic atoms/ions work, It just depends on the amount of electrons they each have and it could be said that they are isoelectronic to one another?

Jocelynn Franco 1L
Posts: 51
Joined: Fri Sep 24, 2021 7:32 am

Re: Isoelectronic examples

Postby Jocelynn Franco 1L » Tue Oct 26, 2021 2:51 pm

Neelaj Das 1I wrote:These atoms are all isoelectronic because they all have the same number of electrons despite being different elements. Sodium's atomic number is 11, so in its ground state it has 11 electrons. However, due to the positive 1 charge, Na+ actually has 10 electrons. If you count the electrons for Mg2+ and F- in a similar fashion, you can see that they also each have 10 electrons. This makes these atoms isoelectronic.


So they're isoelectronic to one another? Is that how Isoelectronic atoms/ions work, It just depends on the amount of electrons they each have and it could be said that they are isoelectronic to one another?

Nishan Reddy 3K
Posts: 131
Joined: Fri Sep 24, 2021 5:28 am

Re: Isoelectronic examples

Postby Nishan Reddy 3K » Tue Oct 26, 2021 8:31 pm

They are all isotronic because they have the same number of electrons since the ions either gained or lost electrons to achieve the equivalent number of electrons as normal Neon.


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