The bond order of 1.5 is shown by:  

1. \(\text O^+_2\) 2. \(\text O^-_2\)
3. \(\text O^{2-}_2\) 4. \(\text O_2\)

Subtopic:  M.O.T |
 82%
From NCERT
AIPMT - 2012
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Identify the wrong statement among the following.

1. Amongst isoelectronic species, the smaller the positive charge on the cation, the smaller is the ionic radius
2. Amongst isoelectronic species, the greater the negative charge on the anion, the larger is ionic radius
3. Atomic radius of the elements increases as one moves down the first group of the periodic table
4. Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 75%
From NCERT
AIPMT - 2012
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Which of the following species contains three bond pairs and one lone pair around the central atom?

1. \(\text H_{2} \text O\)

2. \(\text{BF}_{3}\)

3. \(\text{NH}^-_2\)

4. \(\text{PCl}_{3}\)

Subtopic:  Hybridisation |
 84%
From NCERT
AIPMT - 2012
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The pair of species with the same bond order is:

1. O22-, B2

2. O2+,NO+

3. \(\text {NO, CO}\)

4. N2,O2

Subtopic:  M.O.T |
 72%
From NCERT
AIPMT - 2012
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Which of the two ions from the list given below have the geometry that is explained by the same hybridisation of orbitals, NO2-,NO3-,NH2-,NH4-,SCN- ?

1.  NH4- and NO3-

2.  SCN- and NH2-

3.  NO2- and NH2-

4.  NO2- and NO3-

Subtopic:  Hybridisation |
 60%
From NCERT
AIPMT - 2011
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Which of the following has the minimum bond length?

1.  O2-

2.  O22-

3.  O2

4.  O2+

Subtopic:  M.O.T |
 76%
From NCERT
AIPMT - 2011
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Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has a high melting point?

1. Metallic bonding

2. Van der Waals' bonding

3. Ionic bonding

4. Covalent bonding

Subtopic:  Types of Chemical Bond |
 53%
From NCERT
AIPMT - 2010
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In which of the following pairs of molecules/ions, the central atoms have sphybridization?

1. NO2- and NH3

2. BF3 and NO2-

3. NH2-and H2O

4. BF3 and NH2-

Subtopic:  Hybridisation |
 81%
From NCERT
AIPMT - 2010
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A molecule/ion among the following species that does not exist under normal conditions is:

1. \(Be^+_2\)
2. \(Be_2\)
3. \(B_2\)
4. \(Li_2\)

Subtopic:  M.O.T |
 74%
From NCERT
AIPMT - 2010
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The correct order of increasing bond angles in the following species is:

1. \(C l_{2} O < C l O_{2} < C l O_{2}^{-}\)

2. \(C l O_{2} < C l_{2} O < C l O_{2}^{-}\)

3. \(C l_{2} O < C l O_{2}^{-} < C l O_{2}\)

4. \(C l O_{2}^{-} < C l_{2} O < C l O_{2}\)

Subtopic:  Hybridisation |
AIPMT - 2010
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