There are some species given below

CHEMISTRY · Subjective · CBSE · Chemistry · Chemical Bonding and Molecular Structure · Chemical Bonding and Molecular Structure

Problem

There are some species given below.
(i) O2+O_2^+(ii) CO(iii) B2B_2(iv) O2−O_2^-
(v) NO+NO^+(vi) He2+He_2^+(vii) C22+C_2^{2+}(viii) CN−CN^-
(ix) N2−N_2^-
Total number of species which have their fractional bond order.

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