Question

An electron jumps to higher excited state of a orbital which is non directional and have 4 radial node than shell with which electron belong?

Answer 1

s-orbital is non-directional in nature. Therefore, the electron in the excited state belongs to s-orbital. Value of $l$ for s-orbital is 0.

Number of radial nodes = 4 (given)

Radial node $=(n-l-1)$

$(n-0-1)=4$

$n=4+1=5$

Thus, electron belongs to $5s$ subshell of $5^{th}$ shell.