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Bond Parameters - Bond Order, Angle, Length, and Energy - Practice Questions & MCQ
Updated on Sep 18, 2023 18:35 AM | #JEE Main
Quick Facts
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Bond Parameters: length, angle, energy, strength is considered one of the most asked concept.
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22 Questions around this concept.
Solve by difficulty
Which among the following species has unequal bond lengths ?
Which of the following order is correct that describes bond strength
The $\mathrm{C}-\mathrm{O}$ bond length in $\mathrm{CO}, \mathrm{CO}_2$ and $\mathrm{CO}_3^{2-}$ follows the order
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Which one of the following has highest C-N bond length
The bond angle in ethylane is
The C-C bond length is shortest in
In which of the following molecules/ions are all the bonds not equal?
Concepts Covered - 1
Bond Parameters: length, angle, energy, strength
Bond length
It is the distance between the nuclei of two bonded atoms when the lowest potential energy between the atoms is achieved.
Bond angle
It is the angle between any two covalent bonds that share a common atom as shown in figure.
Bond distances (lengths) and angles are shown for the formaldehyde molecule, H2CO.
Bond energy
It is the energy required to break one mole of bonds between two atoms in a gaseous state. For example, the bond enthalpy of H-H bond is 435.8 kJ/mol.
$\mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{H}(\mathrm{g})+\mathrm{H}(\mathrm{g}): \Delta_{\mathrm{a}} \mathrm{H}^{\prime}=435.8 \mathrm{kJmol}^{-1}$
Bond Strength
It is the strength by which the bonded atoms are held together in a molecule. It is measured in terms of the bond energy, in other words, it is the amount of energy required to break the bond.
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Average Bond Lengths and Bond Energies for Some Common Bonds |
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Bond |
Bond Length (Å) |
Bond Energy (kJ/mol) |
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C–C |
1.54 |
345 |
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C=C |
1.34 |
611 |
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C≡C |
1.20 |
837 |
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C–N |
1.43 |
290 |
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C=N |
1.38 |
615 |
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C≡N |
1.16 |
891 |
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C–O |
1.43 |
350 |
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C=O |
1.23 |
741 |
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C≡O |
1.13 |
1080 |
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