When describing the isotopes of the same element, the most accurate statement is that they have:
Correct answer: A. The same atomic number but different atomic masses
- A. The same atomic number but different atomic masses
- B. The same atomic mass but different atomic numbers
- C. Different numbers of protons and neutrons
- D. Different numbers of electrons
Explanation
This is the correct answer. Isotopes are atoms of the same element that have the same number of protons (atomic number) but different numbers of neutrons. This difference in neutrons results in different atomic masses.
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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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