- Atomic Number (Z) = Number of Protons. - In a neutral atom, Number of Protons = Number of Electrons. - The mass number is the total number of protons and neutrons in the nucleus (Mass Number = Protons + Neutrons). - In this case, Protons = 6, Electrons = 6, Neutrons = 6. - Atomic Number = 6. - Mass Number = 6 + 6 = 12. This describes an atom of Carbon-12.
There are six electrons, six protons and six neutrons in an atom of an element. What is the atomic number of the element ?
Asked in UPSC NDA 2 2016 · Topic: Atomic Structure (Isotopes, Isobars, and Isotones)
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