Atomic StructureRutherford's Atomic Model76Choose 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 Orbitals77Choose 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 Orbitals78Choose 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 StructureIsoelectronic Species79Choose the best answerWhich pair is NOT isoelectronic?AMn²⁺ and Fe³⁺BFe²⁺ and Mn²⁺CO²⁻ and F⁻DNa⁺ and Mg²⁺ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Flame Tests80Choose the best answerWhich substance is commonly responsible for a bluish-green colour in fireworks?ABarium saltsBStrontium saltsCCopper compoundsDSodium salts Like 1 Discuss 0Share