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

hintHint:

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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