If 13.6 eV energy is required to ionize the hydrogen atom, then the required energy to remove an electron from n = 2 is:
Correct answer: B. 3.4 eV
- A. 10.2 eV
- B. 3.4 eV
- C. 0 eV
- D. 6.8 eV
Explanation
Ionizing a hydrogen atom from its ground state requires 13.6 eV. For an electron in the second orbit, it's already at a higher energy level, so less energy is needed. Specifically, only one-fourth of 13.6 eV, which is 3.4 eV, is required to remove it.
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