Which of the following statement is true about moleculer structure ........

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Which of the following statement is true about moleculer structure:

Proton, neutron and electron all are inside the nucleus.

Proton and neutron are inside the nucleus and electrons revolve ariund the nucleus.

Neutron and electron are found inside the nucleus and protons revolve around the nucleus.

None of the above.

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Explanation:

Every atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and typically a similar number of neutrons. Protons and neutrons are called nucleons. More than 99.94% of an atom's mass is in the nucleus. The protons have a positive electric charge, the electrons have a negative electric charge, and the neutrons have no electric charge.