Question

For a $2s$ orbital the radial node is at a distance of :

• A. $0.53A^0$
• B. $2.6A^0$
• C. $3.5A^0$
• D. $1.1A^0$

Answer 1

The correct option is B $2.6A^0$

The radial node is the region between two successive $s$ orbitals.

For a $2s$ orbital the radial node is at a distance of $2.6A^0$.

The wave function is plotted against the distance from nucleus and the distance of the radial node is obtained.

$2s$ orbital has only one radial node.

Therefore, the option is B.