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In a sample of ethyl ethanoate $({CH}_{3} {COOC}_{2} H_{5})$ , the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct ?
I) One of the oxygen atoms has gained electrons.
II) One of the oxygen atoms has gained two neutrons
III) The two oxygen atoms are isotopes
IV) The two oxygen atoms are isobars

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An Intiative by Sri Chaitanya

I and II

II and III

Only III

I and IV

answer is C.

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Detailed Solution

Isotopes: Atoms with same atomic number with differ mass number (no. of neutrons).

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