I think the answer would be 420hg=4,200,000cg
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Answer</h2>
Nucleus: Protons and Neutrons
Electron Cloud: Electrons
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Explanation</h2>
An atom consists of three subatomic particles i.e Electrons, Protons and neutrons. Protons and neutrons are found inside of the nucleus of an atom whereas electrons are found in the orbits that surround the nucleus of an atom known as electron cloud. In the atom Protons contain positive charge to attract the electrons which contain negative charge and the neutrons contain no electrical charge.
