What happens to the molecule when its atoms are brought closer than the bond length between them?
Correct answer: A. Molecule becomes unstable
- A. Molecule becomes unstable
- B. Molecule becomes more stable
- C. Molecule starts vibrating
- D. Stability of the molecule remains unchanged.
Explanation
Bond length is defined as the distance between two nuclei of atoms in a covalent bond. It can also be defined as the internuclear distance when there is a maximum possible orbital overlap. This distance is not actually constant, since the atoms are constantly vibrating. Therefore it is the average internuclear distance that is considered as bond length.
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About Bond Energy
Bond energy is the energy needed to break one mole of a particular covalent bond in gaseous molecules, while bond formation releases energy. Reaction enthalpy is estimated by subtracting the total energy of bonds formed from bonds broken, with attention to average bond energies and their limitations for specific molecules.
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