Atomic StructurePositive Rays31Choose the best answerThe nature of positive rays produced in a discharge tube mainly depends on the:AMaterial of the cathodeBNature of the residual gasCShape of the discharge tubeDApplied magnetic field only Like 0 Discuss 0Share
Atomic StructureDiscovery and Development of Atomic Structure32Choose the best answerWhich pair is NOT correctly matched?ARutherford — ProtonBJ. J. Thomson — ElectronCJames Chadwick — NeutronDBohr — Isotope Like 0 Discuss 0Share
Atomic StructureBeta Particles33Choose the best answerThe electron is identical to which type of particle emitted in β⁻-decay?Aα-particleBβ⁻-particleCH⁺ ionDPositron Like 0 Discuss 0Share
Atomic StructureDegenerate Orbitals34Choose 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
Atomic StructureMagnetic Quantum Number35Choose the best answerThe magnetic quantum number of the valence electron of sodium, Z = 11, is:A3B2C1D0 Like 0 Discuss 0Share