The isoelectronic species are -

Foundation

Chemistry Foundation

Isotopes Isobars Isotones Isostere Isodiaphere

Question

${NO}_{3}^{-}, {NO}_{2}^{}$

${CO}_{3}^{2 -}, {SO}_{3}^{2 -}$

${CO}_{3}^{2 -}, {NO}_{3}^{-}$

${SO}_{3}^{2 -}, {SO}_{4}^{2 -}$

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

Number of electrons in CO₃²- = 6 + 3 × 8 + 2 = 32
Number of electrons in NO₃– = 7 + 3 × 8 + 1 = 32