Nucleus of an atom whose atomic mass is 24 consists of
Correct answer: B. 12 protons and 12 neutrons
- A. 11 electrons, 11 protons and 13 neutrons
- B. 12 protons and 12 neutrons
- C. 11 electrons, 13 protons and 11 neutrons
- D. 11 protons and 13 electrons
Explanation
Atomic mass 24 is of Magnessium. It has 12 atomic charge , which means 12 protons and atomic mass 24. Therefore , 24 - 12 = 12 neutrons it contains.
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About Composition of Atomic Nuclei
Atomic nuclei contain positively charged protons and electrically neutral neutrons, collectively called nucleons. Questions use atomic number, mass number and nuclear notation to identify isotopes, isobars and isotones, and may connect nuclear composition with nuclear charge, mass defect, binding energy and the stability of the nucleus.
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