Radii Trends

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904914037
Posts: 65
Joined: Wed Sep 18, 2019 12:16 am

Radii Trends

Postby 904914037 » Mon Oct 21, 2019 11:33 pm

Are the trends for atomic radii the same for that of ionic radii and covalent radii?

MAC 4G
Posts: 108
Joined: Wed Sep 18, 2019 12:16 am

Re: Radii Trends

Postby MAC 4G » Mon Oct 21, 2019 11:44 pm

I know that both atomic and ionic radii follow the same trend on the periodic table. Generally, radius decreases moving across a period (row) and increases moving down a group (column). As for covalent, I'm not 100% sure and I don't want to give you the wrong information. Sorry.

Natalie Nartz 4F
Posts: 50
Joined: Thu Jul 11, 2019 12:17 am

Re: Radii Trends

Postby Natalie Nartz 4F » Tue Oct 22, 2019 12:58 am

Yes atomic, ionic, and covalent radii all share the same trend. Radius decreases across a period, and increases down a group

Amy Pham 1D
Posts: 88
Joined: Fri Aug 09, 2019 12:15 am

Re: Radii Trends

Postby Amy Pham 1D » Tue Oct 22, 2019 2:00 am

The only difference is in the cations and anions that form the ionic bonds. Cations are smaller than their parent atoms because they have a more positive charge and the nucleus holds more tightly to its electrons. And anions are bigger than their parent atoms because they have more electrons to experience electron-electron repulsion.


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