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प्रश्न
Predict the shape and bond angles in the following molecule:
H2S
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उत्तर
There are two bond pairs and two lone pairs on the central atom. Hence, the shape of H2S is bent or V-shaped and H–S–H bond angle is slightly less than 109°28′.
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संबंधित प्रश्न
Give a reason for HF is a polar molecule
Which type of hybridization is present in the ammonia molecule?
Write the geometry and bond angle present in ammonia.
In the case of bond formation in Acetylene molecule: State number of sigma and pi bonds formed.
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Predict the shape and bond angles in the following molecule:
HCN
Using data from the Table, answer the following:
| Examples | C2H6 Ethane | C2H4 Ethene | C2H2 Ethyne |
| Structure |
\[\begin{array}{cc} \backslash \phantom{......}/\phantom{.}\\ \ce{—C – C —}\\ /\phantom{......}\backslash\phantom{.}\end{array}\] |
\[\begin{array}{cc} \backslash \phantom{......}/\\ \ce{C \text{=} C}\\ /\phantom{......}\backslash\end{array}\] |
\[\ce{- C ≡ C -}\] |
| Type of bond between carbons | single | double | triple |
| Bond length (nm) | 0.154 | 0.134 | 0.120 |
| Bond Enthalpy kJ mol-1 | 348 | 612 | 837 |
- What happens to the bond length when unsaturation increases?
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- Comment on the overall relation between Bond length, Bond Enthalpy, and Bond strength and stability.
Complete the flow chart.
| Molecular Formula | Structural Formula | Shape/ Geometry | Bond angle |
| BeCl2 | 180° | ||
| O=C=O | Linear | ||
| C2H2 |
Write the formula to calculate the bond order of molecule.
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\[\ce{C_{(s)} + 2H2_{(g)} -> CH4_{(g)}}\], ΔH = −x kcal
\[\ce{C_{(g)} + 4H_{(g)} -> CH4_{(g)}}\], ΔH = −x1 kcal
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The average C-H bond enthalpy is:
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(Nb = bonding electrons, Na = antibonding electrons)
