Question

The probability distribution curve for $2s$ electron appears like

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

Given : The probability distribution curve for $2s$ electron appears like:
Solution :
For 2s: $n=2$ and $l=o$ for the given atomic orbital (2s orbital), the number of radial nodes $=2-0-1=1$. Hence the radial probability distribution curve should contain a trough representing a radial node .Hence the radial probability distribution curve should contain a trough representing a radial node.