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Timothy P. Hanusa
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BIOGRAPHY

Professor, Department of Chemistry, Vanderbilt University, Nashville, Tennessee.

Primary Contributions (7)
A color-coded periodic table of the elements displays each element's symbol and atomic number, with categories such as alkali metals, noble gases, halogens, transition metals, and actinoid elements distinguished by different background colors.
alkaline-earth metal
Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Prior to the 19th century, substances that were nonmetallic, insoluble in water, and…
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