alleryThe number of radial nodes in a 3s orbital is:
A0
B1
C2
D3
Answer & Solution
Correct answer: C. 2
1. Total nodes = n − 1; angular nodes = ℓ; radial nodes = n − 1 − ℓ.
2. For 3s: n = 3, ℓ = 0, so radial nodes = 3 − 1 − 0 = 2.
3. Plus 0 angular nodes (s orbital is spherical).
_Source: syllabus Chem Ch 2 §2.6 (radial / angular nodes)_
Keep practising Chemical Thermodynamics
Browse all Chemical Thermodynamics questions for AP Intermediate 1st Year, or explore more Chemistry topics.
Related questions
A process whose enthalpy and entropy changes share the same arithmetic sign will show:At minus 10.00 degrees Celsius the entropy change of the universe for melting is negative,Melting is described as spontaneous at 10.00 degrees Celsius because at that temperature:K_sp of a sparingly soluble salt AB at 25 °C is 4 × 10⁻¹⁰. Molar solubility s of AB is:A buffer solution is most resistant to pH change when:K_w (ionic product of water at 25 °C) is:The pH of a 0.01 M HCl solution is:For an exothermic reaction at equilibrium, raising the temperature: