Question : Which are the four quantum numbers for an electron present in 4f orbital?
Option 1: n=4, I=3, m=+1, s=+1 / 2
Option 2: n=3, I=2, m=-2, s=+1 / 2
Option 3: n=4, I=4, m=-4, s=-1 / 2
Option 4: n=4, I=3, m=+4, s=+1 / 2
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Correct Answer: n=4, I=3, m=+1, s=+1 / 2
Solution : The correct option is n=4, I=3, m=+1, s=+1 / 2 .
The four quantum numbers for an electron in a 4f orbital are:
- Principal quantum number (n) = 4.
- Azimuthal quantum number (l) = 3.
- Magnetic quantum number (m_l) can take values from -3 to +3, including 0.
- The spin quantum number (m_s) can be either +1/2 or -1/2.
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