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118 Elements and Their Symbols and Atomic Numbers: Definition, Symbol with Atomic Number118 Elements and Their Symbols and Atomic Numbers: The periodic table is a well-organized chart that contains all the known elements in the universe.These elements are building blocks of matter ...
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Live Science on MSNPeriodic table of elements quiz: How many elements can you name in 10 minutes?you have 10 minutes to name as many elements as you can, given only their symbol, atomic weight and the broad group they live ...
Dr. Tim: So this is the periodic table and each letter on it represents a different element. We call these letters symbols. And an element is a pure substance made from only one type of atom.
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