According to Bohr's atomic model, as we move away from the nucleus

Options

A. radius of the orbit go on increasing
B. energy of the orbits go on decreasing
C. both (a) and (b)
D. neither (a) or (b)

Explanation

### Step-by-Step Solution:

1. **Understanding Bohr's Atomic Model**:
- Bohr's atomic model describes the structure of an atom, specifically how electrons orbit the nucleus in defined paths or shells.

2. **Analyzing the Radius of Orbits**:
- According to Bohr's model, the radius of the electron orbits is given by the formula:
\[ r = \frac{0.529 n^2}{Z} \text{ angstroms} \]
- Here, \( r \) is the radius, \( n \) is the principal quantum number (which indicates the shell), and \( Z \) is the atomic number.

3. **Determining the Relationship**:
- From the formula, we see that the radius \( r \) is directly proportional to \( n^2 \).
- As \( n \) increases (which means moving to shells further away from the nucleus), the radius \( r \) also increases.

4. **Analyzing the Energy of Orbits**:
- The energy of the electron in a shell is given by the formula:
\[ E = -\frac{13.6 Z^2}{n^2} \text{ eV} \]
- In this equation, energy \( E \) is inversely proportional to \( n^2 \).

5. **Understanding Energy Changes**:
- As \( n \) increases, the value of \( n^2 \) increases, which makes the energy \( E \) (being negative) less negative (or increases in value).
- Therefore, the energy of the orbits actually increases as we move away from the nucleus.

6. **Evaluating the Statements**:
- **Statement A**: "The radius of the orbit goes on increasing." - This statement is correct.
- **Statement B**: "The energy of the orbits goes on decreasing." - This statement is incorrect; the energy actually increases.
- **Statement C**: "Both A and B." - This is incorrect because B is wrong.
- **Statement D**: "Neither A nor B." - This is also incorrect because A is correct.

7. **Conclusion**:
- The correct answer is that as we move away from the nucleus, the radius of the orbit increases.

### Final Answer:
- The correct statement is: **The radius of the orbit goes on increasing.**

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