After 10 years, 75 g of an original sample of 100 g of a certain radioactive isotope has decayed.The half-life of the isotope is
A) 5 years.
B) 7.5 years.
C) 20 years.
D) 40 years.
Correct Answer:
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Q44: When a nucleus of the copper isotope
Q46: The half-life of a certain radioactive isotope
Q47: When a nucleus of the copper isotope
Q48: The product of the gamma decay of
Q50: The product of the alpha decay of
Q51: A proton is annihilated when it interacts
Q52: The nuclide that decays by electron capture
Q53: The hydrogen isotope, Q54: The helium isotope Q55: Quarks are not present in
A) electrons.
B) protons.
C)
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