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Princeton University
10 年
Strontium, Sr
Strontium is a metal in group IIA of the periodic table with atomic number 38, an atomic weight of 87.62, and a density of 2.6 Mg/m 3. Its melting point is 768 C, and it boils at 1380 C. The ...
6 天
on MSN
118 Elements and Their Symbols and Atomic Numbers: Definition, Symbol with Atomic Number
The periodic table is a well-organized chart that contains all the known elements in the universe. These elements are ...
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