Hey guys,

Love the book. Thank you so much.

Not sure if it is misleading to say

"Group VIIIA elements: He, Ne, Ar, Kr, Xe all have 8 electrons in the valence shell."

"He" has two electrons and it is a noble gas because its outter most shell is filled. I'm not 100% sure on this. But thought of bringing it up.

This is found in the "Valence and Crystal Structure" of Volume III


Thanks again guys,

-Andy

 

Absolutely, it is incorrect to include He in that grouping.

It should leave He out of that sentence and add another sentence saying He has a K shell as it's outermost shell and, as such, is filled with only two electrons.

On that note, toward the top of the page, we see:

An over simplified chemistry rule applicable to simple reactions is that atoms try to form a complete outer shell of 8 electrons (two for the L shell).

The L shell is filled with 8 electrons. It means to say the K shell, I believe.

 

Hello,

Here is a picture with how the shells are filled on the noble gasses:

This picture is part of a screenshot of the following page:
http://www.chemtutor.com/struct.htm

Bertus