Atomic StructureMagnetic Quantum Number and Orbital Orientation126Choose the best answerAn orbital has quantum numbers n = 2, ℓ = 1 and mℓ = 0. It is commonly represented as:A1sB2sC2pₓD2pz Like 4 Discuss 0Share
Atomic StructureHund's Rule127Choose the best answerWhich arrangement of two electrons in three degenerate p-orbitals obeys Hund's rule?Apₓ² pᵧ⁰ pz⁰Bpₓ¹(↑) pᵧ¹(↓) pz⁰Cpₓ¹(↑) pᵧ¹(↑) pz⁰Dpₓ² pᵧ¹ pz⁰ Like 0 Discuss 0Share
Atomic StructureHeisenberg Uncertainty Principle128Choose the best answerIn Heisenberg's uncertainty relation: Δx × Δp ≥ h/4π Δp represents:AUncertainty in energyBUncertainty in velocityCUncertainty in momentumDUncertainty in mass Like 0 Discuss 0Share
Atomic StructureIsotopes129Choose the best answerWhich quantity is the same for all isotopes of a given element?ANumber of protonsBNumber of neutronsCTotal number of nucleonsDMass number Like 0 Discuss 0Share
Atomic StructureBohr Radius130Choose the best answerThe radius of the first Bohr orbit of hydrogen is 0.53 Å. What is the radius of its third Bohr orbit?A0.79 ÅB1.59 ÅC3.18 ÅD4.77 Å Like 0 Discuss 0Share