Chemistry - Atomic Structure Question with Solution | TestHub

* For a 2s orbital, the radial probability graph shows one radial node followed by a main peak.

* The size of the orbital is inversely proportional to the atomic number ($Z$), meaning a higher nuclear charge pulls the electron density closer to the nucleus.

* The height of the radial probability peak is directly proportional to $Z$.

* Comparing the curves, Curve A is closest to the nucleus with the highest peak (Li²⁺, $Z=3$), Curve B is in the middle (He⁺, $Z=2$), and Curve C is farthest with the lowest peak (H, $Z=1$).