Chemistry
Grade-9
Easy
Question
Which element is shown in the Bohr-Rutherford model in the picture?
- Helium
- Hydrogen
- Argon
- 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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