Page 1 of 1

atomic Radii

Posted: Sat Oct 26, 2019 10:34 pm
by Alexis Robles 2k
Atomic Radii is basically ranked by electrons. So the more electron, the higher the atomic radii?

Re: atomic Radii

Posted: Sat Oct 26, 2019 10:37 pm
by Wendy 1E
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.

Re: atomic Radii

Posted: Sat Oct 26, 2019 10:40 pm
by ckilkeary 2G
Yes, exactly. The more electrons added to the outer shell the more electrons far away from the nucleus and the atomic radii increases.

Re: atomic Radii

Posted: Sat Oct 26, 2019 10:40 pm
by ckilkeary 2G
Yes, exactly. The more electrons added to the outer shell the more electrons far away from the nucleus and the atomic radii increases.

Re: atomic Radii

Posted: Sun Oct 27, 2019 12:50 am
by Megan Ngai- 3B
yes! the more electrons means a larger radii because there will essentially be more shells.

Re: atomic Radii

Posted: Sun Oct 27, 2019 1:49 am
by Louise Lin 2B
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.

Re: atomic Radii

Posted: Sun Oct 27, 2019 10:17 am
by Ayushi2011
Adding more electrons would definitely increase the atomic radius because the electrons keep getting added to the outermost shell.

Re: atomic Radii

Posted: Sun Oct 27, 2019 10:38 am
by Rodrigo2J
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.

Re: atomic Radii

Posted: Sun Oct 27, 2019 11:42 am
by Joowon Seo 3A
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.

Re: atomic Radii

Posted: Sun Oct 27, 2019 11:54 am
by Gabriella Bates 2L
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.

Re: atomic Radii

Posted: Sun Oct 27, 2019 12:30 pm
by Aarushi Solanki 4F
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.

Re: atomic Radii

Posted: Sun Oct 27, 2019 12:51 pm
by Bryce Barbee
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.