Which of the following is/are not correct about isotopes of an element? The have

Which of the following is/are not correct about isotopes of an element? The have
  • A.
    the same neutron number
  • B.
    the same proton number
  • C.
    same number of electrons
  • D.
    same chemical properties
  • E.
    different physical poperties.
Correct Answer: Option A
Explanation
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