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Q. No.Among the following compounds, how many contain two lone pairs on the central atom?
XeF4, H2O, SF4, CF4
1. 4
2. 1
3. 2
4. 0
Subtopic: V.S.E.P.R & V.B.T |
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Subtopic: Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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Consider the following oxygen species:
O₂⁺, O₂, O₂⁻, O₂²⁻
Find the correct increasing order of bond order among these species.
1. O₂⁻ < O₂²⁻ < O₂⁺ < O₂2. O₂ < O₂⁻ < O₂⁺ < O₂²⁻
3. O₂²⁻ < O₂⁻ < O₂ < O₂⁺
4. O₂²⁻ < O₂⁺ < O₂⁻ < O₂
Subtopic: M.O.T |
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How many molecules among the following exhibit a non-zero dipole moment?
\(BeF_2 , BF_3 , H_2O , NH_3 , HCl , CCl_4 \)
1. Four (4)
2. Six (6)
3. Zero (0)
4. Three (3)
\(BeF_2 , BF_3 , H_2O , NH_3 , HCl , CCl_4 \)
1. Four (4)
2. Six (6)
3. Zero (0)
4. Three (3)
Subtopic: Polarity |
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Amongst SF4, XeF4, CF4, and H2O, the number of species with two lone pairs of electrons on the central atom is:
1. 3
2. 1
3. 2
4. 0
1. 3
2. 1
3. 2
4. 0
Subtopic: V.S.E.P.R & V.B.T |
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Which of the following nitrogen oxides contains an odd number of electrons
(unpaired electron) on the nitrogen atom, making it a paramagnetic radical?
2. NO2
3. N2O3
4. N2O5
Subtopic: Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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Species, among the following, that experience an increase in bond strength upon the removal of an electron are:
(a) B2
(b) NO
(c) N2
(d) O2
(e) C2
Choose the correct option:
1. (b) and (d)
2. (a), (b) and (d)
3. (b) and (e)
4. (b) and (c)
(a) B2
(b) NO
(c) N2
(d) O2
(e) C2
Choose the correct option:
1. (b) and (d)
2. (a), (b) and (d)
3. (b) and (e)
4. (b) and (c)
Subtopic: M.O.T |
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The pair of ions that is isoelectronic with \(\text{Al}^{3+}\) ion is:
1. \(\mathrm{Mg}^{2+}, \mathrm{O}^{2-} \)
2. \(\mathrm{Na}^{+}, \mathrm{N}^{2-} \)
3. \(\mathrm{C}^{4-}, \mathrm{Cl}^{-} \)
4. \(\mathrm{F}^{-}, \mathrm{Mg}^{+} \)
1. \(\mathrm{Mg}^{2+}, \mathrm{O}^{2-} \)
2. \(\mathrm{Na}^{+}, \mathrm{N}^{2-} \)
3. \(\mathrm{C}^{4-}, \mathrm{Cl}^{-} \)
4. \(\mathrm{F}^{-}, \mathrm{Mg}^{+} \)
Subtopic: Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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Identify the correct statement regarding SF4:
| 1. | It has one lone pair at the equatorial position with two lone pair-bond pair repulsion at 90°. |
| 2. | It has one lone pair at the axial position with two lone pair-bond pair repulsion at 90°. |
| 3. | It has one lone pair at the equatorial position with three lone pair-bond pair repulsion at 90°. |
| 4. | It has one lone pair at the axial position with three lone pair-bond pair repulsion at 90°. |
Subtopic: Hybridisation |
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Subtopic: Hybridisation |
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