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Mass number of element is –
  • a)
    Number of protons in its nucleus
  • b)
    Number of electrons and protons in the atom
  • c)
    Number of neutrons and protons in the nucleus
  • d)
    Number of neutrons in the nucleus
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Mass number of element is –a)Number of protons in its nucleusb)N...
The mass number is sum. Of protons and neutrons in the nucleus because mass of electrons is so much less that it is almost neglectable. So when we calculate mass we only take protons and neutrons.
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Mass number of element is –a)Number of protons in its nucleusb)N...
The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.
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Mass number of element is –a)Number of protons in its nucleusb)Number of electrons and protons in the atomc)Number of neutrons and protons in the nucleusd)Number of neutrons in the nucleusCorrect answer is option 'C'. Can you explain this answer?
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