Radii

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Kelsey Ash 1D
Posts: 50
Joined: Wed Sep 18, 2019 12:16 am

Radii

Postby Kelsey Ash 1D » Mon Oct 14, 2019 8:29 pm

What is the difference between ionic and atomic radius?

karinaseth_1A
Posts: 57
Joined: Sat Jul 20, 2019 12:15 am

Re: Radii

Postby karinaseth_1A » Mon Oct 14, 2019 8:31 pm

Ionic radius refers to the radius of an ion, which is an atom that has gained or lost electrons. Because they have a unique number of electrons which can occupy more or less shells, the radius of the ion will be different than the radius of the original atom, which is referred to as the atomic radius.

christabellej 1F
Posts: 109
Joined: Sat Aug 17, 2019 12:17 am

Re: Radii

Postby christabellej 1F » Mon Oct 14, 2019 8:54 pm

In addition, the radius of a cation is usually smaller than its regular atom. The radius of an anion is larger than what the neutral atom would normally be because of the increased electron repulsion effects (since anions have more electrons). For atomic radius, the atomic radius increases as you go down the periodic table because the principal level increases. The atomic radius decreases as you go across.


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