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118 Elements and Their Symbols and Atomic Numbers: Definition, Symbol with Atomic Number
118 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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Atomic structure and the periodic table
The periodic table The periodic table is a chart of all ... The three common Group 7 elements are chlorine, bromine and iodine. The word ‘halogen’ means 'salt former'. Group 0 and testing ...