JEE PYQ: Atomic Structure Question 23
Question 23 - 2020 (05 Sep Shift 2)
The correct statement about probability density (except at infinite distance from nucleus) is:
(1). (It can be zero for 1s orbital)
(2). (It can be negative for 2p orbital)
(3). (It can be zero for 3p orbital)
(4). (It can never be zero for 2s orbital)
Show Answer
Answer: (3)
Solution
3p has 1 radial node ($n - \ell - 1 = 3 - 1 - 1 = 1$), so $\psi^2$ can be zero.