The correct order of bond angles (smallest first) in H2S, NH3, BF3 and SiH4 is 

1. H2S < SiH4 < NH3  < BF3

2. NH3 < H2S < SiH4 < BF3

3. H2S < NH3 < SiH4 < BF3

4. H2S < NH3 < BF3 < SiH4

Subtopic:  V.S.E.P.R & V.B.T |
 65%
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The bond order in NO is 2.5 while that in NO+ is 3.

Which of the following statements is true for these

two species? 

1. bond length in NO+ is greater than in NO

2. bond length in NO is greater than in NO+

3. bond length in NO+ is equal than in NO

4. bond length is unpredictable

Subtopic:  M.O.T |
 86%
From NCERT
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Which of the following has the regular tetrahedral structure

1. [Ni(CN4)]2-

2. SF4

3. BF4-

4. XeF4

Subtopic:  Hybridisation |
 74%
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The maximum number of 90° angles between bond pair-bond pair of electrons is observed in : 

1. sp3d2 hybridization.

2. sp3d hybridization.

3. sp3 hybridization.

4. dsp2 hybridization. 

Subtopic:  Hybridisation |
 76%
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Molecule/Ion that is diamagnetic in nature is: 

1. \(\mathrm{H}^-_2\) 2. \(\mathrm{H}_2\)
3. \(\mathrm{H}^+_2\) 4. \(\mathrm{He}^+_2\)
Subtopic:  M.O.T |
 88%
From NCERT
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The lattice energy of an ionic compound depends upon 

1. packing of ions only 

2. size of the ion only 

3. charge on the ion and size of the ion 

4. charge on the ion only

Subtopic:  Lattice & Hydration Energy |
 89%
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The number and type of bonds between two carbon atoms in calcium carbide are 

1. One sigma, two pi

2. Two sigma, two pi 

3. One sigma, one pi 

4. Two sigma, one pi 

Subtopic:  Types of Chemical Bond |
 62%
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Which among the following does not contain a set of isoelectronic species?

1. SO3-2, CO32-, NO3-

2. CN-, N2, CO

3. BO33- , CO32- ,NO3-

4. PO43-, SO42-, ClO4-

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 73%
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Which of the following molecules/ions does not contain unpaired electrons?

(1) O2 2-

(2) C2-

(3) N2+

(4) O2

 

Subtopic:  M.O.T |
 76%
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A molecule or ion that has an unequal bond length is:

1. \(\mathrm{SF}_4\) 2. \(\mathrm{SiF}_4\)
3. \(\mathrm{XeF}_4\) 4. \(\mathrm{BF}^-_4\)
Subtopic:  V.S.E.P.R & V.B.T |
 59%
From NCERT
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