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JAMB Chemistry 1988 Question 12

Question 12

Periodic Table

The energy change accompanying the addition of an electron to a gaseous atom is called

  1. A.first ionization energy
  2. B.second ionization energy
  3. C.electron affinity
  4. D.electronegativity
Show the answer and explanation

Answer: C (electron affinity)

Explanation

Electron affinity is the energy change when a gaseous atom gains an electron. Ionization energy is for removing one.