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Atoms of which group in the periodic table have a valence shell electron configuration of $n s^{2} ?$
Chemistry 101
Chapter 6
Electronic Structure and Periodic Properties of Elements
Electronic Structure
Periodic Table properties
University of Central Florida
University of Maryland - University College
University of Kentucky
Brown University
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So this problem We're asked to take a look at the periodic table and identify the group in the periodic table that is goingto have a fully filled s orbital. So this notation means that we could be looking at any and energy level. We're looking at an s orbital with two electrons in it as the outermost surveillance on the the atom. The first thing I want to do is reorient u to the organization of the periodic table on how it reflects those outer valence shells. So these two exchange columns on the side here representing group one and two, they're outermost. Electrons are in the S orbital. So they're Vaillant Shell is made of by us or bro electrons. We look over to the right side. This block of six groups is going to be the ones that have electrons. And as the P is their their highest energy level, the D block electrons are in the middle. So these Adams here have a d sub shell as their furthest filled Baylin show. And finally the Lantern eyes and the actor Nides fall into the F block category where they're outermost. Electrons are within the F sub orbital. I do want to point out that at the end of an F block on a typical drawing of a periodic table, these last two Adams the tedium and Lorenzi Amar actually deep lock elements and they should fit into the table here. And what the table really should look like is thes two s blocks long f the d right next to it and the p. But because that's very difficult to fit on a page. Generally, it's broken up this way. But keep in mind if you're doing something that has ah, more direct question towards the D Block that these two Adams here are actually members of the D block. Um, so then also, just remember that electrons fill these orbital's from left to right walking across the periodic table as you look through these individual energy levels. And it's also further important to remember that the D block and these these F blocks are actually moved down and energy level. So the top row of this D block is actually an equal three, even though it appears to be an equal for so looking at that, we just want to identify the group that's going to have to electrons and its outer filled s orbital. And because of that, we walk from left to right filling Group one group to first, etcetera. So that means the group to is going to be the group of the periodic table that's going to have just two electrons in its outer field balance.
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