science
Grade-9
Easy
Question
Which one of the following is a sub-atomic particle?
- Positron
- Isotope
- Neutron
- Isobar
Hint:
The atoms are made up of protons, neutrons, and electrons. So the neutrons are the sub-atomic particles.
The correct answer is: Neutron
- A positron is a particle that has the same number of electrons as the mass and it is not a sub-atomic particle of an atom.
- Isotopes are atoms of a particular species that have the same number of protons and different numbers of neutrons.
- The neutrons are sub-atomic particles that are bound to the nucleus.
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