Atomic StructureQuantum Numbers36Choose the best answerFor an electron with n = 4 and mℓ = +2, which statement is NOT possible?Amₛ may be +½Bℓ may be 2Cℓ may be 3Dℓ may be 0 or 1 Like 0 Discuss 0Share
Atomic StructureIsobars37Choose the best answerWhich one of the following pairs represents isobars?A³₂He and ⁴₂HeB²⁴₁₂Mg and ²⁵₁₂MgC⁴⁰₁₉K and ⁴⁰₂₀CaD³⁹₁₉K and ⁴⁰₁₉K Like 0 Discuss 0Share
Atomic StructureRutherford's Atomic Model38Choose the best answerExperimental evidence for the existence of the atomic nucleus was obtained from:AMillikan's oil-drop experimentBAtomic emission spectroscopyCMagnetic deflection of cathode raysDScattering of α-particles by a thin metal foil Like 0 Discuss 0Share
Atomic StructureDegenerate Orbitals39Choose the best answerIn the absence of an external field, the energy of an electron in a 2pᵧ orbital is:AGreater than in 2pₓBLess than in 2pₓCEqual to that in 2sDEqual to that in 2pz Like 0 Discuss 0Share
Atomic StructureDegenerate Orbitals40Choose the best answerWhich set of orbitals is degenerate in the absence of an external field?A2s, 2pₓ, 2pᵧB3s, 3pₓ, 3dxyC1s, 2s, 3sD2pₓ, 2pᵧ, 2pz Like 0 Discuss 0Share