Addition of second electron to a uni-negative ion always_?
Correct answer: A. An endothermic process
- A. An endothermic process
- B. An exothermic process
- C. Neutral process
- D. Energy wasted
Explanation
The addition of a second electron to a uninegative ion (an ion with a single negative charge, such as F⁻) is always an endothermic process. This means that it requires an input of energy. The reason for this is that adding a second electron to an ion with one negative charge results in increased electron-electron repulsions, which require energy to overcome. Additionally, the second electron enters a higher energy orbital, contributing to the endothermic nature of the process.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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