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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...
Mass number of an element:
The mass number of an element is the total number of protons and neutrons in the nucleus of an atom of that element. It is represented by the symbol A.
Explanation:
The correct answer is option C: Number of neutrons and protons in the nucleus.
- The mass number of an element is determined by the number of subatomic particles in the nucleus.
- The nucleus of an atom contains protons and neutrons, while the electrons are present in the electron cloud surrounding the nucleus.
- The number of protons in the nucleus is called the atomic number and is represented by the symbol Z.
- The number of neutrons can vary in different isotopes of the same element, but the sum of protons and neutrons remains constant for a specific isotope.
- Therefore, the mass number is calculated by adding the number of protons (Z) and the number of neutrons (N) in the nucleus of an atom.
- Mathematically, mass number (A) = Z (number of protons) + N (number of neutrons).
In summary, the mass number of an element represents the total number of protons and neutrons in the nucleus of an atom.
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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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