The statement that does not belong to bohr 's model of atom is

Options

A. the energy of the eletrons in the orbit is quantized
B. the electron in the orbit nearest to the nucleus is in lowest energy state
C. the electrons revolve in different orbits around the nucleus
D. the electrons emit energy during revolution due to the presence of coulmbic forces of attaraction

Answer

To solve the question about which statement does not belong to Bohr's model of the atom, we will analyze each option provided in the context of Bohr's postulates.

### Step-by-Step Solution:

1. **Understanding Bohr's Model**:
- Bohr's model of the atom describes the behavior of electrons in atoms, particularly hydrogen. It introduces the idea that electrons occupy specific energy levels or orbits around the nucleus.

2. **Analyzing Each Statement**:
- **Option A**: "The energy of electron in an orbit is quantized."
- This statement is true and is a fundamental aspect of Bohr's model. Electrons can only occupy certain energy levels, and these levels are quantized.

- **Option B**: "The electron in an orbit nearest to the nucleus is in lower energy state."
- This statement is also true. According to Bohr's model, the closer an electron is to the nucleus, the lower its energy state.

- **Option C**: "The electron revolves in the different orbit around the nucleus."
- This statement is correct as well. Bohr's model describes electrons as revolving in distinct orbits around the nucleus.

- **Option D**: "The electron emits energy during the revolution due to the presence of Coulombic forces of attraction."
- This statement is incorrect according to Bohr's model. Bohr proposed that electrons do not emit energy while in a stable orbit; they only emit or absorb energy when transitioning between orbits.

3. **Conclusion**:
- The statement that does not belong to Bohr's model of the atom is **Option D**.

### Final Answer:
The statement that does not belong to Bohr's model of atom is: **"The electron emits energy during the revolution due to the presence of Coulombic forces of attraction."**

---