How many orbitals are possible that have at least two radial nodes, if a curve is plotted between radial distribution function versus radial distance for which principal quantum number (n) ≤ 5.

Question

TestHub · Accepted Answer

Radial nodes = n - l - 1 ≥ 2.

n = 3: 3s (2 nodes): 1 orbital. n = 4: 4s (3 nodes) and 4p (2 nodes): 1 + 3 = 4 orbitals; 4d has 1.

n = 5: 5s (4), 5p (3), 5d (2): 1 + 3 + 5 = 9 orbitals; 5f has 1.

Total = 1 + 4 + 9 = 14.

Answer: 14.

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