MCQ
Isotopes of element have …………….. .
  • A
    different atomic numbers and different atomic mass
  • B
    different atomic numbers but the same atomic mass number
  • the same atomic number but different atomic mass numbers
  • D
    the same atomic number and the same atomic mass number

Answer

Correct option: C.
the same atomic number but different atomic mass numbers
the same atomic number but different atomic mass numbers

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