MCQ
If in a certain reaction, two different reactants take part then
- Athe reaction cannot be of second order
- Bthe reaction cannot be of first order
- ✓the molecularity of the reaction cannot be one
- Dthe molecularity of the reaction cannot be two
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$(a)$ Lewis acidity order : $SiF_4 < SiC_{4} < SiBr_4 < Sil_4$
$(b)$ Melting point : $NH_3 > SbH_3 > AsH_3 > PH_3$
$(c)$ Boiling point : $NH_3 > SbH_3 > AsH_3 > PH_3$
$(d)$ Dipole moment order : $NH_3 > SbH_3 > AsH_3 > PH_3$
$(i)$ $Xe{O_3}$ $(ii)$ $XeO{F_4}$ $(iii)$ $Xe{F_6}$
Those having same number of lone pairs on Xe are