Bohr's Model
According to Bohr's model, the energy of an electron in the nth orbit of a hydrogen atom is given by E = -13.6/n² eV. What is the energy of an electron in the third orbit?
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About This Question
- Subject
- chemistry
- Chapter
- atomic structure
- Topic
- bohr's model
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
-1.51 eV
According to Bohr's Model for the Hydrogen atom, the energy of an electron in the nth shell is: En=−n213.6 eV/atom Given n=3 for the third orbit: E3=−3213.6=−913.6≈−1.51 eV
- The negative sign indicates that the electron is bound to the nucleus by attractive forces.
- As n increases, En becomes less negative, meaning the electron is less tightly bound.
This easy difficulty chemistry question is from the chapter atomic structure, covering the topic of bohr's model. It appeared in the 2025 exam.
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