The pair that is isostructural (i.e. having the same shape and hybridization) is

1.  NH3 and BF3

2.  BF4- and NH4+

3.  BCl3 and BrCl3

4.  NH3 and NO3-

Subtopic:  Hybridisation |
 88%
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Which of the following represents the correct order of dipole moment?

1.  NH3 > NF3 > H2O

2.  NH3 >  H2O >NF3

3.  H2O > NH3>NF3

4.  H2O >NF3> NH3

Subtopic:  Polarity |
 60%
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Which of the following has the shortest bond length?

1.  O2

2.  O2-

3.  O2+

4.  O2-2

Subtopic:  M.O.T |
 78%
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Lattice energy for an ionic compound is calculated by using

1.  Kirchhoff's equation

2.  Markownikoff's rule

3.  Born Haber cycle

4.  Carnot cycle

Subtopic:  Lattice & Hydration Energy |
 84%
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Assuming that Hund's rule is violated by the diatomic molecule B2, its bond order and magnetic nature will be respectively

1.  1, diamagnetic

2.  1, paramagnetic

3.  2, diamagnetic

4.  2, paramagnetic

Subtopic:  M.O.T |
 55%
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In the Lewis structure of ozone O3 the formal charge on the central oxygen atom is 

1.  +1

2.  -1

3.  0

4.  -2

 

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 62%
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For SF4, the molecular geometry and hybridization of the central atom respectively are

1.  Square planar, dsp2

2.  Tetrahedral, sp3

3.  Seesaw, sp3d

4.  Square pyramid, sp3d

Subtopic:  Hybridisation |
 74%
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A diatomic molecule has a dipole moment of 1.2 D. If its bond length is equal to 10 -10 m then the fraction of an electronic charge on each atom will be:

1. 42%                                               

2. 52%

3. 37%                                               

4. 25%

Subtopic:  Polarity |
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There is no S - S bond in :

(A) S2O32-                                                 (B) S2O42-

(C) S2O52-                                                 (D) S2O72-

Subtopic:  Group 16 - Preparation, Properties & Uses |
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From the given structures, the correct structure(s) of F3Cl2 is are

l.  

ll.  

lll.  

1.  Only l

2.  Only ll

3.  Only lll

4.  l, ll and lll

 

Subtopic:  Hybridisation |
 63%
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