GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The atomic number of an element tells the number of ____ in the nucleus of an atom of that element
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protons
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neutrons
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electrons
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isotopes
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Explanation:
Detailed explanation-1: -The atomic number of an element is equal to the number of protons in its nucleus. In a neutral atom, the number of protons equals the number of electrons in shells which is the energy level around the nucleus.
Detailed explanation-2: -The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.
Detailed explanation-3: -The number of protons in the nucleus of an atom is its atomic number (Z). This is the defining trait of an element: Its value determines the identity of the atom. For example, any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how many neutrons or electrons it may have.
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