Which one of the following has the maximum number of isotopes ?
Correct answer: C. tin
- A. oxygen
- B. carbon
- C. tin
- D. chlorine
Explanation
Tin has the greatest number of naturally occurring stable isotopes among the listed elements, with ten commonly recognized stable isotopes. Oxygen, carbon and chlorine have only a few naturally occurring isotopes. Students may choose oxygen because it is abundant in nature, but abundance is different from the number of isotopes.
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About Moles and Avogadro's Number
The mole connects the microscopic number of particles with measurable mass, using Avogadro's number, 6.022 × 10²³ particles per mole. Questions involve molar mass, conversion between mass, moles and particles, percentage composition, empirical and molecular formulas, and distinguishing atoms, molecules, ions and formula units.
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