In a sample of ethyl ethanoate (CH3COOC2H5) 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.
ScienceClass 9CBSEAnswered 27 Mar 2026
Answer
Soln:
Answer is(c) The two oxygen atoms are isotopes
Explanation:
Two Oxygen atoms in CH3COOC2H5 can have different number of neutrons only if the two O-atoms are isotopes. Isotopes of an element have same number of protons (and electrons) but different number of neutrons.
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