Element are represented by one or two - letter symbol
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It may be one also and. two also...
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A chemical symbol is a one- or two-letter designation of an element. Some examples of chemical symbols are O for oxygen, Zn for zinc, and Fe for iron. The first letter of a symbol is always capitalized. If the symbol contains two letters, the second letter is lower case.
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Chemical Symbols and Formulas.
Chemical Symbol Name
Pb Lead Plumbum
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