Which of the following statements about isotopes is correct?
Correct answer: C. Isotopes with even atomic number and even mass number are abundant
- A. Isotopes with odd atomic number are abundant
- B. Isotopes with odd atomic number and even mass number are abundant
- C. Isotopes with even atomic number and even mass number are abundant
- D. Isotopes with even atomic number and odd mass number are abundant
Explanation
Isotopes with even atomic number and even mass number are abundant.There are several reasons why isotopes with even atomic numbers and even mass numbers are more abundant:Nuclear stability: Even-even nuclei tend to be more stable due to the way protons and neutrons pair up inside the nucleus. This pairing effect creates stronger nuclear forces, making the nucleus less likely to decay.Nucleosynthesis: Many elements are formed through nuclear fusion processes, which often favor the creation of even-even nuclei. For example, in the fusion of two hydrogen atoms to form helium, an even-even nucleus is produced.
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About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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