Which isotope has highest momentum when moving with same velocity?
Correct answer: C. Tritium
- A. Protium
- B. Deuterium
- C. Tritium
- D. All of these have same momentum
Explanation
Tritium has one proton and two neutrons in its nucleus. It is the heaviest isotope of hydrogen, and hence, has the highest momentum, given that velocity of all three is same. Momentum of an isotope is directly related to it mass by P= mv. Hence, C option is the correct option.
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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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