Question

Out of the following, which is the correct match for the radial probability of finding the electron for $2s$ orbital

• A. $A-H,B-H{e}^{+},C-L{i}^{2+}$
• B. $A-H{e}^{+},B-H,C-L{i}^{2+}$
• C. Can't say
• D. $A-L{i}^{2+},B-H{e}^{+},C-H$

Answer 1

Answer: (D)

Radial nodes for $2s$ orbital is at distance $\frac{2a_0}{Z}$
For( A ) $\frac{2a_0}{Z}$ is least $Z=3$ for $L{i}^{2+}$
For $(B)\frac{2a_0}{Z}$ is intermediate $Z=2$ for $H{e}^{+}$
For (C) $\frac{2a_0}{z}$ is maximum $Z=1$ for $H$.
$A-L{i}^{2+},B-H{e}^{+},C-H$