SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the number of protons and electrons
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the number of protons and neutrons
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the number of electrons and neutrons
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None of the above
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Detailed explanation-1: -The mass of an atom is the sum of number of protons and number of neutrons present in that atom in atomic mass unit . The total number of protons and neutrons present in a nucleus is termed as nucleon . Therefore, the mass of an atom is equal to the number of nucleons in atomic mass unit .
Detailed explanation-2: -Fundamental Subatomic Particles The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Detailed explanation-3: -Answer and Explanation: The atomic number of an atom is equal to the number of protons present in the nucleus of that atom.
Detailed explanation-4: -Atomic mass of an element is equal to the sum of proton and neutrons.
Detailed explanation-5: -The nucleus contains both protons and neutrons, the sum of which determines the mass number. That is, the sum of nucleons indicates the mass number of an atom. A is the mass number (protons + neutrons). Hence the mass number of an atom is equal to the number of protons plus neutrons.