Atomic Structure Question 316
Question: The four quantum numbers of the valence electron of potassium are
[DPMT 2004]
Options:
A) 4, 1, 0 and $ \frac{1}{2} $
B) 4, 0, 1 and $ \frac{1}{2} $
C) 4, 0, 0 and $ +\frac{1}{2} $
D) 4, 1, 1 and $ \frac{1}{2} $
Show Answer
Answer:
Correct Answer: C
Solution:
Atomic number of potassium is 19 and hence electronic configuration will be $ 1s^{2},,2s^{2},,2p^{6},,3s^{2},,3p^{6},,4s^{1} $
Hence for $ 4s^{1} $ electron value of Quantum number are Principal quantum number $ n=4 $ Azimuthal quantum number $ l=0 $ Magnetic quantum number $ m=0 $ Spin quantum number $ s=+1/2 $
