Considering all shells with n le 5, how many orbitals have exactly 2 angular nodes and at least one radial node?

JEE Advanced levelNumerical answerDifficulty 3 of 3as160

Considering all shells with $n \leq 5$ , how many orbitals have exactly 2 angular nodes and at least one radial node?

Numerical answer type, tolerance 0.01.

Exactly 2 angular nodes means

l = 2

(d). Radial nodes

n - 3 \geq 1

requires

n = 4, 5

. Each d subshell has 5 orbitals, so

2 \times 5 = 10