The species doesn't have unpaired electrons is:

1. \(N^+_2\) 2. \(O_2\)
3. \(O^{2-}_2\) 4. \(B_2\)
Subtopic:  M.O.T |
 70%
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Among the following, the correct order of energies of molecular orbitals of N2 is-

1. (π2py)<(σ2pz)<(π*2px)(π*2py)

2. (π2py)>(σ2pz)>(π*2px)(π*2py)

3. (π2py)<(σ2pz) (π*2px)(π*2py)

4. (π2py)>(σ2pz)<(π*2px)(π*2py)

Subtopic:  M.O.T |
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From the perspective of molecular orbital theory, which statement is false?

1. Be2 is not a stable molecule.

2. He2 is not stable but He2+ is expected to exist.

3. Bond strength of N2 is maximum amongst the homonuclear diatomic molecules belonging to the second period.

4. The order of energies of molecular orbitals in N2 molecule is: 

σ2s<σ2s*<σ2pz<(π2pxπ2py)
<(π2px*π2py*)<σ2pz*

Subtopic:  M.O.T |
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What is the correct sequence of bond order for the specified species?

1. \(\mathrm{O}^-_2>\mathrm{O}_2>\mathrm{O}^+_2\) 2. \(\mathrm{O}^-_2<\mathrm{O}_2<\mathrm{O}^+_2\)
3. \(\mathrm{O}^-_2>\mathrm{O}_2<\mathrm{O}^+_2\) 4. \(\mathrm{O}^-_2<\mathrm{O}_2>\mathrm{O}^+_2\)
Subtopic:  M.O.T |
 83%
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Match the species in Column I with the bond order in Column II.

Column I

Column II

A. NO

1. 1.5

B. CO

2. 2.0

C. O2-

3. 2.5

D. O2

4. 3.0

Codes

Options:  A   B   C   D 
1. 3 4 1 2
2. 1 2 3 5
3. 5 4 3 2
4. 4 5 3 2

Subtopic:  M.O.T |
 87%
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Which of the following have identical bond order?

(a) CN-

(b) NO+

(c) O2-

(d) O22-

Choose the correct option

1. (a), (b)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  M.O.T |
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Diamagnetic species are those which contain no unpaired electrons. Among the following, diamagnetic species are

(a) N2

(b) N22-

(c) O2

(d) O22-

Choose the correct option

1. (a), (d) 2. (b), (c)
3. (c), (d) 4. (b), (d)
Subtopic:  M.O.T |
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Identify the species with identical bond orders from the following options.

(a) N2

(b) N2-

(c) F2+

(d) O2-

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

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 81%
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