Question

write the value of all the quantum number for the last electron in case of N,Na and O


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Answer 1

for N ⇒ 1s² 2s² 2p³

so n = 2   l = 1  m = -1 or 0 or 1

for Na ⇒ 1s² 2s² 2p⁶ 3s¹

so n=3   l=0  m=0

for O ⇒ 1s² 2s² 2p⁴

so n=2   l=1  m=-1 or 0 or 1