Homework Help: chemistry

Posted by Jarrad Schomaker on Tuesday, June 28, 2005 at 3:59pm.

Use the shell model to explain why a lithium atom Li, is larger than a beryllium atom, Be.

I don't think it is larger. It has a lower atomic number 3 vs 4. It is therefore lighter
see below link and click on elements.

http://www.webelements.com/

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