In a regular octahedral molecule, MX6 the number of X-M-X bonds at 180°is

1. 3

2. 2

3. 6

4. 4

Subtopic:  Hybridisation |
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Which of the following is not isostructural with SiCl4

1. SCl4     

2. SO42-

3. PO43-

4. NH4+

Subtopic:  Hybridisation |
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In which of the following species the central atom has the type of hybridisation which is not the same as that present in the other three ?

1. SF4

2. I3-

3. SbCl52-

4. PCl5

Subtopic:  Hybridisation |
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Which of the following has   - bonding?

1. NO3-

2. SO32-

3. BO33-

4.CO32-

Subtopic:  Hybridisation |
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In BrF3 molecule, the lone pairs occupy equatorial positions to minimize:

1. lone pair-bond pair repulsion

2. Bond pair-bond pair repulsion

3. Lone pair-lone pair repulsion and lone pair-bond pair repulsion

4. Lone pair-lone pair repulsion

Subtopic:  Hybridisation |
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In which one of the following molecules, the central atom said to adopt sp2 hybridisation ?

1. BeF2

2. BF3

3. C2H2

4. NH3

Subtopic:  Hybridisation |
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According to molecular orbital theory which of the following lists rank the nitrogen species in terms of increasing bond order ?

1. N2- < N2 < N22-

2. N22- < N2- < N2

3. N2 < N22- <N2-

4. N2- < N22- < N2

Subtopic:  M.O.T |
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In which of the following molecules/ions BF3, NO2-,NH2- and H20, the central atom is sp2 hybridised? 

1. NO2and NH2-

2. NH2-  and H20

3. NO2- and H20

4. BFand NO2-

Subtopic:  Hybridisation |
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Which one of the following is planar ?

1. XeF4

2. XeO4

3. XeO3

4. XeO3F2

Subtopic:  Hybridisation |
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In PO43- ion, the formal charge on each oxygen atom and P-O bond order respectively are

1. -0.75, 0.6

2. -0.75, 1.0

3. -0.75, 1.25

4. -3.1, 1.25

Subtopic:  Octate,Isoelectronic Species ,Lewis Structure & Formal Charge |
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