How many unstable radioactive isotopes have been produced through artificial disintegration?
Correct answer: C. 300
- A. 280
- B. 40
- C. 300
- D. 154
Explanation
280 different isotopes occur in nature including 40 radioactive isotopes as well.300 unstable radioactive isotopes produced through artificial disintegrationAmong 280 naturally occurring isotopes, 40 are radioactive iisotopesOut of 280 naturally occurring isotopes, 154 have even mass numbers and even atomic number.
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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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