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Q.

The four quantum numbers of the valence electron of potassium are

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a

4,  1,  0  and  12

b

4,  0,  1  and  12

c

4,  0,  0  and + 12

d

4,  1,  1  and  12

answer is C.

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Detailed Solution

Atomic number of potassium is 19 and hence electronic configuration will be 1s2,  2s2,  2p6,  3s2, 3p6,  4s1Hence for 4s1 electron value of Quantum number arePrincipal quantum number n = 4Azimuthal quantum number l = 0Magnetic quantum number m = 0Spin quantum number s = +1/2
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The four quantum numbers of the valence electron of potassium are