Atomic StructureDegenerate Orbitals and Zeeman Effect281Choose the best answerWhen an external magnetic field is applied, previously degenerate orbitals may become:AMore degenerateBNon-degenerateCSmaller in numberDIdentical in orientation Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Atomic Theory282Choose the best answerWho first proposed that matter is made of indivisible particles called “atomos”?ADalton and ThomsonBLeucippus and DemocritusCAristotle and RutherfordDBohr and Democritus Like 0 Discuss 0Share
Atomic StructureRutherford's Atomic Model283Choose the best answerRutherford's α-particle scattering experiment showed that an atom contains:AOnly electronsBOnly protonsCA small, dense, positively charged nucleusDNeutrons distributed throughout the atom Like 0 Discuss 0Share
Atomic StructureElectronic Configuration and Shell Distribution284Choose the best answerSodium and potassium have the same number of electrons in the:AL-shellBOutermost shell numberCM-shellDValence shell principal quantum number Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electronic Transitions285Choose the best answerFor a transition in a single atom, energy can be expressed as:AkJ mol⁻¹ onlyBJ per atomCJ mol⁻¹ onlyDm s⁻¹ Like 0 Discuss 0Share