Multiple Choice QuestionsThe Correct order of increasing bond length of C - H, C-O, C - C and C = C is
C - C < C=C < C - O < C - H
C - O < C - H < C - C < C = C
C - H < C - O < C - C < C= C
C - H < C = C < C - O < C - C
Which of the following structures is the most preferred and hence of lowest energy of SO3 ?
In which of the following pairs, both the species are not isostructural?
SiCl4.PCl4+
Diamond, carbide
NH3, PH3
NH3, PH3
D.
NH3, PH3
a) SiCl4.PCl4+ : Both are isostructural because their central atom is sp3 hybridised and both have a tetrahedral arrangement.
b) Diamond and silicon carbide (SiC): Both are isostructural because their central atom is sp3 hybridised and both have a tetrahedral arrangement.
c) NH3 and PH3 have sp3 geometry.
d) XeF4 has sp3d2 hybridizations while XeO4 has sp3 hybridizations.Hence, XeF4 and XeO4 are not isostructural.
In which of the following pairs of molecules/ions, the central atoms have sp2 hybridization?
NO2- and NH3
BF3 and NO2-
NH2- and H2O
NH2- and H2O
Which one of the following species does not exist under normal conditions?
Be2+
Be2
B2
B2
In which one of the following species the central atom has the type of hybridisation which si not the same as that present in the other three?
SF4
I3-
SbCl52-
SbCl52-
The correct order of the decreasing ionic radii among the following isoelectronic species is
Ca2+ > K+ >S2- > Cl-
Cl- > S2- > Ca2+ > K+
S2- > Cl- > K+ > Ca2+
S2- > Cl- > K+ > Ca2+
is
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