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Chemistry Question on Electronic Configurations Of Elements And The Periodic Table

Among the following groupings, which one represents the set of iso-electronic species?

A

NO+,C22−,O2−,CONO^{+}, C^{2-}_{2}, O_{2}^{-}, CO

B

N2,C22−,CO,NON_{2},C^{2-}_{2}, CO, NO

C

CO,NO,+CN−,C22−CO, NO,^{+}CN^{-}, C^{2-}_{2}

D

NO,CN−,N2,O2−NO, CN^{-}, N_{2}, O^{-}_{2}

Answer

CO,NO,+CN−,C22−CO, NO,^{+}CN^{-}, C^{2-}_{2}

Explanation

Solution

Iso Electronic  specisIso\, Electronic\,\, specis
CO=14e−CO=14e^{-}
NO+=14e−NO^{+}=14e^{-}
CN−=14e−CN^{-}=14e^{-}
C2−2=14e−C^{-2}_{2} =14e^{-}