atomic radius

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704992521
Posts: 31
Joined: Fri Apr 06, 2018 11:05 am

atomic radius

Postby 704992521 » Sun Apr 29, 2018 11:28 pm

How does one calculate atomic radius

MariahClark 2F
Posts: 60
Joined: Wed Nov 15, 2017 3:04 am

Re: atomic radius

Postby MariahClark 2F » Sun Apr 29, 2018 11:50 pm

Im not quite sure if we will be asked to calculate the atomic radius ever but I think its worth knowing how to get a generalization with a periodic trend. In general, the size of an atom will decrease when you go from left to right on the periodic table but will increase as you go down a certain group.

Chem_Mod
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Re: atomic radius

Postby Chem_Mod » Mon Apr 30, 2018 9:28 pm


Amir Akhavan 1E
Posts: 34
Joined: Fri Apr 06, 2018 11:01 am

Re: atomic radius

Postby Amir Akhavan 1E » Wed May 02, 2018 10:47 am

I do not think we will need to know how to exactly calculate atomic radii but instead just to be aware of the trends occurring on the periodic table in regard to it.

Ashley Martinez 1G
Posts: 26
Joined: Fri Apr 06, 2018 11:03 am

Re: atomic radius

Postby Ashley Martinez 1G » Sun May 06, 2018 11:28 pm

There's different approaches to finding the atomic radius that depend on the element's condition. If the element is a metal, its atomic radius is half the distance between the centers of neighboring atoms in a solid sample. If the element is a nonmetal or metalloid, we use half the distance between the nuclei of atoms joined by a chemical bond (also know as covalent radius). If the element is a noble gas, we use van der Waals radius. Section 2.8 in the textbook has helpful graphics!


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