For example, the atomic number of sodium is 11. Every sodium atom has 11 protons and 11 electrons. It has 11 positive charges and 11 negative charges. The mass number of an atom is its total ...
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118 Elements and Their Symbols and Atomic Numbers: Definition, Symbol with Atomic NumberOganesson - Og (Atomic number 118) These elements are organized in the periodic table based on their atomic numbers, which increase sequentially from 1 (Hydrogen) to 118 (Oganesson).
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