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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Which of the following graphs correctly depicts the change in $pH?$

${N_2}(g)\, + 3{H_2}(g)\, \rightleftharpoons \,2N{H_3}(g)$
The equilibrium constant of the above reaction is $K_3$. If pure ammonia is left to dissociate, the partial pressure of ammonia at equilibrium is given by (Assume that $P_{NH_3}<\,< P_{total}$ at equilibrium)