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57. In which of the following pairs, both the species are paramagnetic and have the same bond order?
(1) \( \mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{-} \)
(2) \( \mathrm{N}_{2}, \mathrm{CN}^{-} \)
(3) \( \mathrm{N}_{2}^{+}, \mathrm{O}_{2}^{+} \)
(4) \( \mathrm{C}_{2}, \mathrm{O}_{2} \) 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live