Atomic StructureHeisenberg Uncertainty Principle6Choose the best answerWhich principle most directly contradicts the idea of an electron moving in a precisely defined Bohr orbit?APauli exclusion principleBPlanck quantum theoryCHeisenberg uncertainty principleDHund's rule Like 0 Discuss 0Share
Atomic StructureElectron Capacity of Subshells7Choose the best answerHow many electrons can be accommodated in a subshell for which n = 3 and ℓ = 1?A8B6C18D32 Like 0 Discuss 0Share
Atomic StructureElectronic Transitions and Emission of Energy8Choose the best answerWhen an electron falls from a higher energy level to a lower energy level:AEnergy is emittedBEnergy is absorbedCAtomic number increasesDAtomic number decreases Like 0 Discuss 0Share
Atomic StructureIsoelectronic Species9Choose the best answerWhich among the following are isoelectronic species?ANa⁺, K⁺, Ca²⁺, Mg²⁺BCa²⁺, Mg²⁺, S²⁻, K⁺CCa²⁺, Ar, S²⁻, K⁺DNone of the above Like 0 Discuss 0Share
Atomic StructureEnergy of Electron in Bohr Orbit10Choose the best answerAccording to Bohr's model, the energy of an electron in the nth orbit of hydrogen is:AEₙ = −13.6/n⁴ eVBEₙ = −13.6/n³ eVCEₙ = −13.6/n² eVDEₙ = −13.6/n eV Like 0 Discuss 0Share