In a sample of ethyl ethanoate $(CH_3COOC_2H_5)$,the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it?

  • A
    One of the oxygen atoms has gained electrons
  • B
    One of the oxygen atoms has gained two neutrons
  • C
    The two oxygen atoms are isotopes
  • D
    The two oxygen atoms are isobars

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