MCQ
Among the following which one is a wrong statement?
- A$SeF_4$ and $CH_4$ have same shape
- B$I_3^+$ has bent geometry
- C$PH_5$ and $BiI_5$ do not exist
- ✓$p\pi -d\pi $ bonds are present in $SO_2$

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$(a) P_2O_7^{4-}$ $(b) S_2O_5^{2-}$
$(c) S_2O_7^{2-}$ $(d) Cl_2O_7$
$(e) Mn_2O_7$ $(f) S_2O_8^{2-}$