As compared 12C atom, 14C atom has:
Correct answer: B. Two extra neutrons and no extra electrons
- A. Two extra protons and two extra electrons
- B. Two extra neutrons and no extra electrons
- C. Two extra protons but no extra electrons
- D. Two extra neutrons and two extra electrons
Explanation
Isotopes have same number of electrons and protons but different number of neutrons due to different mass number. Carbon-14 having mass number 2 more , therefore number of neutrons are also 2 more.Carbon- 12 = number of neutrons= 12-6= 6. Carbon-14 = number of neutrons = 14-6 = 8.
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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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