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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2000
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Q)

Isoelectronic species are :


( A ) $CO,CN^-,NO^+,C{_2}^2-$
( B ) $CO,CN,NO,C{_2}$
( C ) $CO^-,CN,NO,C{_2}^-$
( D ) $CO^+,CN^+,NO^-,C{_2}$

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