Question

d. What is meant by subatomic
particle ? Give brief information of three
subatomic particles with reference to
electrical charge, mass and location.
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Answer 1

Explanation:

The three main particles present in an atom are electrons, protons and neutrons. These particles are also called fundamental particles or sub atomic particles. The mass of an electron has been found to be 1/1837 . Electrons are an integral part of all atoms. Electrons charge is one (1) unit negative charge, 1.602× 10-19 coulombs.

Mass of proton was calculated as being equal to mass of an atom of hydrogen that is 1.672× 10 -24g . Positive charge on proton is equal to negative charge on an electron that is 1.602× 10-19 g coulombs. Mass of neutron 1.676×10-24g . Electrically a neutron is neutral , it has no charge. Nucleus is central part of an atom. It contains protons and neutrons. Electrons revolve around the nucleus.