atomic Radii

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Alexis Robles 2k
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atomic Radii

Postby Alexis Robles 2k » Sat Oct 26, 2019 10:34 pm

Atomic Radii is basically ranked by electrons. So the more electron, the higher the atomic radii?

Wendy 1E
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Re: atomic Radii

Postby Wendy 1E » Sat Oct 26, 2019 10:37 pm

This is correct. The addition of an electron adds more electrons to the outermost shell. This increases the radius because there are now more electrons farther away from the nucleus.

ckilkeary 2G
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Re: atomic Radii

Postby ckilkeary 2G » Sat Oct 26, 2019 10:40 pm

Yes, exactly. The more electrons added to the outer shell the more electrons far away from the nucleus and the atomic radii increases.

ckilkeary 2G
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Re: atomic Radii

Postby ckilkeary 2G » Sat Oct 26, 2019 10:40 pm

Yes, exactly. The more electrons added to the outer shell the more electrons far away from the nucleus and the atomic radii increases.

Megan Ngai- 3B
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Re: atomic Radii

Postby Megan Ngai- 3B » Sun Oct 27, 2019 12:50 am

yes! the more electrons means a larger radii because there will essentially be more shells.

Louise Lin 2B
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Re: atomic Radii

Postby Louise Lin 2B » Sun Oct 27, 2019 1:49 am

In line with all above answers, yes, atomic radii increases the more electrons there are. However it is important to also note that atomic radii increases not per electron, but per subshell. Each subshell will hold a certain amount of electrons, and atomic radii increases with each new subshell.

Ayushi2011
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Re: atomic Radii

Postby Ayushi2011 » Sun Oct 27, 2019 10:17 am

Adding more electrons would definitely increase the atomic radius because the electrons keep getting added to the outermost shell.

Rodrigo2J
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Re: atomic Radii

Postby Rodrigo2J » Sun Oct 27, 2019 10:38 am

Yes! More electrons means more shells which means bigger atomic radius! But remember to take into consideration the growing number of protons as you go across the periodic table.

Joowon Seo 3A
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Re: atomic Radii

Postby Joowon Seo 3A » Sun Oct 27, 2019 11:42 am

You have to take into the account the charge of the nucleus as well. For example, Fluorine has more electrons than oxygen, but it has a smaller radius than oxygen. That is why the size becomes smaller if you go down a group. However, just adding electrons to an atom will make it bigger. A fluorine ion is much bigger than just a neutral fluorine.

Gabriella Bates 2L
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Re: atomic Radii

Postby Gabriella Bates 2L » Sun Oct 27, 2019 11:54 am

Yes, this is true. However, you have to remember that going across a period, the number of electrons is increasing, but so is the effective nuclear charge. Therefore, the atomic radius gets smaller across a period, but increases down a group.

Aarushi Solanki 4F
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Re: atomic Radii

Postby Aarushi Solanki 4F » Sun Oct 27, 2019 12:30 pm

Yes - essentially, the more electrons there are, the more electron repulsion there is. This inherently increases the radius. However, there are more factors affecting this than the number of electrons, such as the pull of the nucleus which is determined by the number of protons and the number of core shielding electrons.

Bryce Barbee
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Re: atomic Radii

Postby Bryce Barbee » Sun Oct 27, 2019 12:51 pm

This is because the more electrons, the more shells there will be and the more shells, the bigger the difference between the nucleus and the electrons.


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