The orientation of an orbital is governed by the quantum number known as ……….. and is represented by the symbol …………….
A
principal quantum number (n)
B
angular momentum quantum number
C
magenetic quantum number `(m_(l))`
D
spin quantum number `(m_(s))`
Text Solution
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The correct Answer is:
To solve the question regarding the orientation of an orbital and its governing quantum number, we can follow these steps:
### Step-by-Step Solution:
1. **Understanding Quantum Numbers**:
- Quantum numbers are values that describe the properties of atomic orbitals and the electrons in those orbitals. There are four types of quantum numbers: principal (n), azimuthal (l), magnetic (m_l), and spin (s).
2. **Identifying the Relevant Quantum Number**:
- The question specifically asks about the orientation of an orbital. The orientation of an orbital is determined by the magnetic quantum number.
3. **Defining the Magnetic Quantum Number**:
- The magnetic quantum number (m_l) indicates the orientation of the orbital in space relative to the other orbitals. It can take on integer values from -l to +l, where l is the azimuthal quantum number.
4. **Symbol Representation**:
- The magnetic quantum number is represented by the symbol **m_l**.
5. **Conclusion**:
- Therefore, the orientation of an orbital is governed by the quantum number known as the **magnetic quantum number**, and it is represented by the symbol **m_l**.
### Final Answer:
The orientation of an orbital is governed by the quantum number known as **magnetic quantum number** and is represented by the symbol **m_l**.
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