Isoelectronicity

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Nathan Mariano 2G
Posts: 68
Joined: Fri Sep 28, 2018 12:29 am

Isoelectronicity

Postby Nathan Mariano 2G » Fri Nov 02, 2018 9:36 pm

What is the isoelectronicity? How do we find if one element is isoelectronic to another element?

Swetha Ampabathina1I
Posts: 64
Joined: Fri Sep 28, 2018 12:18 am

Re: Isoelectronicity

Postby Swetha Ampabathina1I » Fri Nov 02, 2018 11:10 pm

Isoelectronicity is when elements/molecules have the same number of valence electrons and electron configurations. For example, Li+ and He are isoelectronic. Most isoelectronic elements also have similar chemical properties.

505211599
Posts: 60
Joined: Fri Sep 28, 2018 12:28 am

Re: Isoelectronicity

Postby 505211599 » Fri Nov 02, 2018 11:21 pm

Isoelectronicity is defined by two or more elements or ions having the same electronic configuration.

Dayna Pham 1I
Posts: 98
Joined: Fri Sep 28, 2018 12:16 am
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Re: Isoelectronicity

Postby Dayna Pham 1I » Sat Nov 03, 2018 1:54 am

Isoelectronicity is the phenomenon when two different atoms/ions have the same number of electrons.

For example, Na and Mg+ are isoelectronic, since Na and Mg+ both have 11 electrons. (Mg has 12 electrons in its neutral state, then it loses an electron, having 11).

Isoelectronicity is an important concept to apply to atomic radius and ionic radius, because when two atoms/ions are isoelectronic, the determining factor to discover the atomic radius and ionic radius is the number of protons.

For example, Na and Mg+ both have 11 electrons, but Mg+ has more protons (12) than Na (11). Therefore, Mg+ is smaller than Na, since the more positive charge in the nucleus pulls the shells in more.

Hope this helped!


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