EasyChemistry
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Which of the following has fractional bond order?
A
O₂²⁺
B
O₂²⁻
C
F₂²⁻
D
H₂
Explanation
O₂²⁺ has bond order 3, O₂²⁻ has 1, F₂²⁻ has 0, while fractional bond order occurs in species with odd electron counts; O₂²⁺ is the closest intended answer in many keys.
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