During the formation of a chemical bond
- electron-electron repulsion becomes more than the nucleus-electron attraction
- energy of the system does not change
- energy increases
- energy decreases
The Correct Option is D
Solution and Explanation
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Concepts Used:
Bond Energies
A chemical compound is made up of different types of atoms. A chemical link holds these atoms together. Chemical bonds are created between atoms when electrons are transferred or valence electrons are shared. The bond energy is useful in thermochemistry because it may be used to calculate the enthalpy of various chemical reactions, such as burning. The enthalpy of reaction is the difference between bond breaking and bond forming during a chemical process.
Different Bond Energies:
A covalent bond is set up when connected iotas in an atom share electrons similarly. With an increment in the quantity of connections between connected molecules, the energy or strength of a synthetic bond increases. As such, when the bond request expands, the synthetic bond's solidarity builds, raising the bond energy much higher. Bond energies of a solitary, twofold, and triple covalent connection between carbon iotas, for instance, are as per the following:
| Covalent Bond | Bond Energy |
|---|---|
| C-C | 348 kJ//mol |
| C=C | 614 kJ//mol |
| C≡C | 839 kJ//mol |