What is a atomic number and atomic mass number of carbon
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6
The element carbon (C) has an atomic number of 6, which means that all neutral carbon atoms contain 6 protons and 6 electrons. In a typical sample of carbon-containing material, 98.89% of the carbon atoms also contain 6 neutrons, so each has a mass number of 12
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Atomic number - the number of protons that a chemical element has in its centre (nucleus)
Atomic mass number- atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. ..
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