Q. No.Find the pair having sp²-hybridised central atoms:
1. NO₂⁻ and NH₃
2. BF₃ and NO₂⁻
3. NH₂⁻ and H₂O
4. BF₃ and NH₂⁻
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. | \(Li_2\) |
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. \(C l O_{2}^{-} < C l_{2} O < C l O_{2}\)
The correct state of hybridisation of C2, C3, C5 and C6 of the hydrocarbon
is in the sequence:
1. sp, sp3, sp2 and sp3
2. sp3, sp2, sp2 and sp
3. sp, sp2, sp2 and sp3
4. sp, sp2, sp3 and sp2
Identify the correct increasing order of bond order among the following species:
1. O₂⁻ < NO < C₂²⁻ < He₂⁺2. NO < C₂²⁻ < O₂⁻ < He₂⁺
3. C₂²⁻ < He₂⁺ < NO < O₂⁻
4. He₂⁺ < O₂⁻ < NO < C₂²⁻
Find the correct increasing order of C–O bond length among CO, CO₃²⁻ , and CO₂:
1. CO₂ < CO₃²⁻ < CO2. CO < CO₃²⁻ < CO₂
3. CO₃²⁻ < CO₂ < CO
4. CO < CO₂ < CO₃²⁻
Select the pair of isostructural species.
1. SF₄ and XeF₄2. SO₃²⁻ and NO₃⁻
3. BF₃ and NF₃
4. BrO₃⁻ and XeO₃
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:
1. 2
2. 3
3. 4
4. 1
According to Molecular Orbital Theory (MOT), which of the following diatomic species contains only \(\pi\) bonds in its ground state?
| 1. | Be2 | 2. | O2 |
| 3. | N2 | 4. | C2 |
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