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How is an element indicated in chemistry?

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Elements are commonly indicated by a chemical symbol, the atomic number and the mass number as shown. The nucleon number or mass number is written in the left superscript. The atomic number or proton number or electronic number is written in the left subscript. read more

Elements are commonly indicated by a chemical symbol, the atomic number and the mass number as shown. * The nucleon number or mass number is written in the left superscript. read more

The number of protons, particles in an atom's nucleus, determines the element. Elements on the periodic table are arranged in order of increasing numbers of protons. The number of protons is also known as an element's atomic number, which is indicated by the number Z. read more

A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z). 118 elements are identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements. read more

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