Consult the WebElements Periodic Table of the Elements
Chapter 2, Problem 38QP(choose chapter or problem)
Consult the WebElements Periodic Table of the Elements (http://www.webelements.com) to find (a) two metals less dense than water, (b) two metals more dense than mercury, (c) the densest known solid metallic element, and (d) the densest known solid nonmetallic element.
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