Question

Assertion(A):The size of the nucleus is very small as compared to the size of
atom. Reason(R) The electrons revolve around the nucleus of the atom.​

Answer 1

Answer:

option a is correct .pls mark me as brainliest

Answer 2

Both A and R are true but reason is not the correct explanation of the assertion.

• The size of an atom's nucleus is very small in comparison to the size of the atom.
• According to the Rutherford gold foil experiment, the nucleus is very small in comparison to the overall size of the atom.
• The nucleus is composed of protons and neutrons and is very hard, dense, and positively charged.
• There is an electrostatic force of attraction between negative charge (electron) and positive charge (nucleus), which provides the necessary centripetal force for electrons to revolve in a definite path around the nucleus.
• Electrons orbit the nucleus in fixed orbits or shells known as energy levels. Electrons in one or more energy levels rotate around the nucleus.
• Therefore, size of the nucleus has nothing to do with electrons revolving around the nucleus of an atom

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