The magnetic quantum number for valency electron of sodium atom isSelect an answerA3B2C1Dzero
Question
The magnetic quantum number for valency electron of sodium atom is
Select an answer
A) 3
B) 2
C) 1
D) zero
Solution
The sodium atom has an atomic number of 11. This means it has 11 electrons in its neutral state. The electron configuration of sodium is 1s² 2s² 2p⁶ 3s¹. The valence electron of sodium is in the 3s orbital.
The magnetic quantum number (ml) describes the energy levels available within a subshell and is dependent on the azimuthal quantum number (l). For an s orbital, the l value is 0.
The magnetic quantum number can have values ranging from -l to +l, including zero. Therefore, for a 3s¹ electron (where l=0), the only possible value for the magnetic quantum number (ml) is zero.
So, the correct answer is D: zero.
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