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Bond Parameters: length, angle, energy, strength is considered one of the most asked concept.
13 Questions around this concept.
For the compounds CH3Cl, CH3Br, CH3I, and CH3F,
the correct order of increasing C-halogen bond length is :
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.
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.
Average Bond Lengths and Bond Energies for Some Common Bonds |
||
Bond |
Bond Length (Å) |
Bond Energy (kJ/mol) |
C–C |
1.54 |
345 |
C=C |
1.34 |
611 |
C≡C |
1.20 |
837 |
C–N |
1.43 |
290 |
C=N |
1.38 |
615 |
C≡N |
1.16 |
891 |
C–O |
1.43 |
350 |
C=O |
1.23 |
741 |
C≡O |
1.13 |
1080 |
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