When an electron is added, energy is released. So electron affinity is given a _.
Correct answer: B. Negative sign
- A. Positive sign
- B. Negative sign
- C. Neutral
- D. Delta sign
Explanation
Negative electron affinity means energy is released when an extra electron is added to the neutral atom. For example, when an extra electron is added to an oxygen atom, some amount of energy is released. So, oxygen has negative electron affinity.
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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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