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Question
The four atomic species can be represented as follows. Out of these, the two species which can be termed isobars are :
(i)`""_60^201"X"`
(ii)`""_61^200"X"`
(iii)`""_58^200"X"`
(iv)`""_60^203"X"`
Options
(i) and (ii)
(ii) and (iii)
(i) and (iii)
(i) and (iv)
Solution
(b) (ii) and (iii)
`""_61^200"X"` and `""_58^200"X"` are isobars because they have the same mass number but different atomic numbers.
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