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29 June, 05:22

Which of the following make up the nucleus of an atom? A. protons and neutrons B. electrons only C. neutrons only D. protons and electrons

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  1. 29 June, 05:43
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    Answer: A. protons and neutrons

    Explanation: An atom is smallest unit of a matter or a substance. Every atom consists of three subatomic particles : electrons, protons, neutrons.

    Protons and Neutrons are located in the center of an atom where while mass of an atom is concentrated.

    Atomic mass = Number of protons + Number of neutrons

    Electrons are located outside the nucleus where they orbit in different energy levels around the nucleus.
  2. 29 June, 05:46
    0
    A) protons and neutrons
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