Among the following groups which represents the collection of isoelectronic species?
A
NO+,C2−2,O−2,CO
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B
N2,C2−2,CO−2,NO
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C
CO,NO+,CN−,C2−2
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D
NO,CN−,N2,O−2
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Solution
The correct option is CCO,NO+,CN−,C2−2 CO,NO+,CN−,C2−2 has 14 electrons each. Carbon has 6 electrons. Oxygen has 8 electrons. Nitrogen has 7 electrons.
If the molecule has a negative charge, add the number of electrons equal to negative charge. If the molecules have a positive charge then subtract the number of electrons equal to that of positive charge.