Question

If the quantum numbers for the 5th electron in carbon atoms are $ 2,1,1,+1/2, $ then for the 6th electron, these values would be

• A. $ 2,1,0,-\frac{1}{2} $
• B. $ 2,0,1,+\frac{1}{2} $
• C. $ 2,1,1,-\frac{1}{2} $
• D. $ 2,1,-1,+\frac{1}{2} $

Answer 1

Answer: (D)

The atomic number of carbon is 6 and its electronic configuration is $ 1{{s}^{2}},2{{s}^{2}},2{{p}^{2}} $ .
Thus, 5th electron enters in $ 2{{p}_{x}} $ and hence, 6th will go to $ 2{{p}_{y}} $ with spin in the same direction.