Question

The two electrons have the following set of quantum numbers: $P = 3 , 2 , - 2 , + \frac {1}{2}$ $Q = 3,0,0,+\frac {1}{2}$ Which of the following statement is true ?

• A. P and Q have same energy
• B. P has greater energy than Q
• C. P has lesser energy than Q
• D. P and Q represent same electron

Answer 1

Answer: (B)

P has greater energy than Q

Answer 2

According to $(n + 1)$ rule, the lower the value of $(n + 1)$ for an orbital, the lower is its energy.

$(n + 1 )$ value for P $\to 3+2=5$
$(n + 1)$ value for Q $\to 3+0=3$

So, greater energy than