MCQ
Which among the following species has unequal bond lengths?
- A$BF _{4}^{-}$
- B$XeF _{4}$
- ✓$SF _{4}$
- D$SiF _{4}$
|
Species |
Hybridisation | Bond length |
| $BF _{4}^{\Theta}$ | $sp ^{3}$ (Tetrahedral) | All bond lengths equal |
| $XeF _{4}$ | $sp ^{3} d ^{2}$ (sq. planar) | All bond lengths equal |
| $SF _{4}$ | $sp ^{3} d ( see - saw )$ | axial bond length $ > $ equitorial bond length |
| $SiF _{4}$ | $sp ^{3}$ (Tetrahedral) | all bond lengths equal |
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$H _{2( g )}+ Br _{2( g )} \rightarrow 2 HBr _{( g )}$
Given that bond energy of $H _{2}$ and $Br _{2}$ is $435 \;kJ mol ^{-1}$ and $192 \;kJ mol^{-1}$, respectively, what is the bond energy (in $kJ mol ^{-1}$ ) of $HBr?$