Q. No.Among the following species \(\mathrm{O}_2^{+}, \mathrm{N}_2^{-}, \mathrm{N}_2^{2-}\) and \({O}_2^{-}\) which have same bond order as well as paramagnetic in nature.
1. \(\mathrm{N}_2^{-}, \mathrm{N}_2^{2-}\)
2. \(\mathrm{O}_2^{+}, \mathrm{N}_2^{-}\)
3. \(\mathrm{O}_2^{+}, \mathrm{O}_2^{-}\)
4. \(\mathrm{O}_2^{-}, \mathrm{N}_2^{-}\)
1. \(\mathrm{N}_2^{-}, \mathrm{N}_2^{2-}\)
2. \(\mathrm{O}_2^{+}, \mathrm{N}_2^{-}\)
3. \(\mathrm{O}_2^{+}, \mathrm{O}_2^{-}\)
4. \(\mathrm{O}_2^{-}, \mathrm{N}_2^{-}\)
Subtopic: M.O.T | Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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Consider the following statements from A to E:
Select the correct statements(s):
1. B, C
2. A, B, C
3. C, D, E
4. B, E
| (A) | \(NF_3\) has more dipole moment than \(NH_3\) |
| (B) | \(O^{-2}_2\) and \(F_2\) both have same bond order |
| (C) | In \(O_3\) central oxygen atom has -1 formal charge |
| (D) | In \(NO_2\) all the atoms follow octet rule, so it is stable |
| (E) | \(BeH_2\) is planar |
Select the correct statements(s):
1. B, C
2. A, B, C
3. C, D, E
4. B, E
Subtopic: Types of Chemical Bond | M.O.T | Octate, Isoelectronic Species, Lewis Structure & Formal Charge | van der Waal Force & Hydrogen Bonding |
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Consider the following molecules:
\(\mathrm{O_2, N_2, F_2, B_2, Cl_2}\)
The total number of paramagnetic molecules are:
\(\mathrm{O_2, N_2, F_2, B_2, Cl_2}\)
The total number of paramagnetic molecules are:
| 1. | Five (5) | 2. | Two (2) |
| 3. | One (1) | 4. | Three (3) |
Subtopic: M.O.T |
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Level 3: 35%-60%
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Among the following, species that have one unpaired \(\)\(e^{\ominus} \)?
1. \(CN^{\ominus} \)
2. \(O^{2-}_2\)
3. \(O^+_2\)
4. \(NO^{\ominus} \)
1. \(CN^{\ominus} \)
2. \(O^{2-}_2\)
3. \(O^+_2\)
4. \(NO^{\ominus} \)
Subtopic: M.O.T |
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The molecular orbital \(\sigma^*\) is represented by:
1. \(\Psi_A+\Psi_B\)
2. \(\Psi_A-\Psi_B\)
3. \(\Psi_A-2 \Psi_B\)
4. \(\Psi_A+2 \Psi_B\)
1. \(\Psi_A+\Psi_B\)
2. \(\Psi_A-\Psi_B\)
3. \(\Psi_A-2 \Psi_B\)
4. \(\Psi_A+2 \Psi_B\)
Subtopic: M.O.T |
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The total number of compounds having bond order 2 among the following is:
\(\mathrm{F}_2, \mathrm{~N}_2, \mathrm{Ne}_2, \mathrm{O}_2, \mathrm{Li}_2, \mathrm{Be}_2\)
1. 1
2. 4
3. 6
4. 9
\(\mathrm{F}_2, \mathrm{~N}_2, \mathrm{Ne}_2, \mathrm{O}_2, \mathrm{Li}_2, \mathrm{Be}_2\)
1. 1
2. 4
3. 6
4. 9
Subtopic: M.O.T |
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Which among the following have single unpaired electron?
\(\mathrm{N}_2, \mathrm{O}_2, \mathrm{CN}^{-}, \mathrm{O}_2^{-}, \mathrm{C}_2^{2-}, \mathrm{N}_2^{-}\)
1. \( \mathrm{O}_2, \mathrm{~N}_2 \)
2. \(\mathrm{CN}^{-}, \mathrm{C}_2^{2-} \)
3. \(\mathrm{CN}^{-}, \mathrm{O}_2^{-} \)
4. \(\mathrm{N}_2^{-}, \mathrm{O}_2^{-}\)
\(\mathrm{N}_2, \mathrm{O}_2, \mathrm{CN}^{-}, \mathrm{O}_2^{-}, \mathrm{C}_2^{2-}, \mathrm{N}_2^{-}\)
1. \( \mathrm{O}_2, \mathrm{~N}_2 \)
2. \(\mathrm{CN}^{-}, \mathrm{C}_2^{2-} \)
3. \(\mathrm{CN}^{-}, \mathrm{O}_2^{-} \)
4. \(\mathrm{N}_2^{-}, \mathrm{O}_2^{-}\)
Subtopic: M.O.T |
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How many of the following species have bond order \(=1\) and are paramagnetic as well?
\(\mathrm{He}_2^{2+} ; \mathrm{O}_2^{2-} ; \mathrm{Ne}_2^{2+} ; \mathrm{F}_2 ; \mathrm{B}_2 ; \mathrm{H}_2 ; \mathrm{O}_2^{2+}\)
1. 6
2. 1
3. 7
4. 2
\(\mathrm{He}_2^{2+} ; \mathrm{O}_2^{2-} ; \mathrm{Ne}_2^{2+} ; \mathrm{F}_2 ; \mathrm{B}_2 ; \mathrm{H}_2 ; \mathrm{O}_2^{2+}\)
1. 6
2. 1
3. 7
4. 2
Subtopic: M.O.T |
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What is the total sum of number of electrons in \(\pi^*\) orbitals of \(\mathrm{O}_2 . \mathrm{O}_2^{+}\) and \(\mathrm{O}_2^{-}\) ?
1. Six (6)
2. Four (4)
3. Two (2)
4. One (1)
1. Six (6)
2. Four (4)
3. Two (2)
4. One (1)
Subtopic: M.O.T |
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Level 1: 80%+
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