what is extra nuclear part in an atom?
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Answer:
The nucleus of the atom consists of protons and neutrons. Electrons are present in extra nuclear part.
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This part is called the nucleus and all protons and neutrons are embedded in it. ... The number of protons in the nucleus of an atom or the number of electrons in its extra-nuclear part is called its atomic number and is denoted by Z.
Explanation:
A proton is positively charged, and an electron carries an equal but opposite negative charge. For an atom to be electrically neutral, it must contain the same number of extranuclear electrons as there are protons in the nucleus. Hence, the number of electrons in a neutral atom of atomic number Z is also Z.
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