MCQ
Which is not possible
- A$ICl_3$
- B$I_3^-$
- ✓$ClBr_7$
- D$BeF_4^{-2}$
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[Atomic Masses - $\mathrm{Na}: 23.0\, \mathrm{u}, \mathrm{O}: 16.0\, \mathrm{u}, \mathrm{P}: 31.0 \,\mathrm{u}]$