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20 May, 12:56

An atom has atomic number 92 and mass number 238. Which of these is an isotope

of this atom?

a. 235U

92

b. 238Th

91

c. 92Nb

41

d. 92X

235

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Answers (1)
  1. 20 May, 14:45
    0
    a. U235

    Explanation:

    Atomic number 92 is that of Uranium. It naturally occurs in several isotopes:

    U-238, U-235, U-234
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