Atomic StructureAufbau Principle and n + ℓ Rule61Choose the best answerThe subshells 4f, 5d, 6p and 7s all have the same (n + ℓ) value. Which is filled first?A4fB6pC5dD7s Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Energy62Choose the best answerWhich expression correctly gives the frequency of radiation emitted in a hydrogen-atom transition?Aν = (me⁴/8ε₀²h³)(1/n₁² − 1/n₂²)Bν = (me⁴/8ε₀²h²)(1/n₁² − 1/n₂²)Cν = ε₀n²h²/Zπme²Dν = −Ze²/8πε₀r Like 6 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electronic Configuration63Choose the best answerWhat is the meaning of the German term “Aufbau”?ABreaking downBBuilding upCEqual-energy distributionDWave propagation Like 1 Discuss 0Share
Atomic StructureMagnetic Quantum Number64Choose the best answerIf ℓ = 3, the possible values of mℓ are:A+1, 0, −1B+2, +1, 0, −1, −2C−3, −2, −1, 0, +1, +2, +3D+1, −1 Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electronic Configuration65Choose the best answerChoose the ground-state electronic configuration of Cl⁻ (Z = 17).A1s² 2s² 2p⁶ 3s² 3p⁵B1s² 2s² 2p⁶ 3s² 3p⁶C1s² 2s² 2p⁶D1s² 2s² 2p⁶ 3s² 3p⁴ Like 2 Discuss 0Share