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    Chemistry
    Grade-9
    Easy

    Question

    Which element is shown in the Bohr-Rutherford model in the picture?

    1. Helium
    2. Hydrogen
    3. Argon
    4. Silver

    Hint:

    Atomic number = number of protons.

    The correct answer is: Argon

      • In Rutherford-Bohr model number of protons and number of neutrons are mentioned.
      • Atomic mass = number of proton + number of neutron. Atomic number = number of protons.
      • Generally in an elements are neutral with equal number of proton and electron.
      • In the picture 18 protons are mentioned. Hence atomic number is 18 and the element is Argon.

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