MCQ
According to molecular theory, the species among the following that does not exist is
- A$He _{2}^{+}$
- B$He _{2}^{-}$
- ✓$Be _{2}$
- D$O _{2}^{2-}$
| Chemical Species | Bond Order |
| $He _{2}^{+}$ | $0.5$ |
| $He _{2}^{-}$ | $0.5$ |
| $Be _{2}$ | $0$ |
| $O _{2}^{2-}$ | $1$ |
According to $M.O.T.$ If bond order of chemical species is zero then that chemical species does not exist.
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$(I)$ $Na_2O_2$
$(II)$ $O_2 [AsF_6]$
$(III)$ $CsO_2$
$(IV)$ $O_2$