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NEETChemistryChemical Bonding and Molecular Structure

How is electron affinity defined?

Options

  1. AThe energy change when an atom loses an electron
  2. BThe energy change when an atom gains an electron
  3. CThe energy change when a molecule forms a covalent bond
  4. DThe energy change when an ion is formed from an atom

Correct answer

B. The energy change when an atom gains an electron

Step-by-step solution

The electron affinity is the negative of the energy change accompanying electron gain, which means it represents the energy change when an atom gains an electron.

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