Question

Which of the following electronic configuration is not possible ?

• A. n = 3, l = 0, m = 0
• B. n = 3, l = 1, m = -1
• C. n =2, l = 0, m = -1
• D. n = 2, l = 1, m = 0

Answer 1

Answer: (C)

n =2, l = 0, m = -1

Answer 2

$n=2, l=0, m=-1$ is not a possible electronic configuration. With $n=2$ and $l=0$, the orbital is $2 s$ having only one $m_{l}$ value i.e. $0$ As the value of $m_{l}=-l$ to $+l$

Other options are correct