Atomic StructureEnergy of Electron in Bohr Orbit51Choose 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
Atomic StructureElectronic Transitions and Emission of Energy52Choose 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 StructureHund's Rule53Choose the best answerWhich rule states that degenerate orbitals are occupied singly before electron pairing occurs?APauli exclusion principleBHund's ruleCAufbau principleDHeisenberg uncertainty principle Like 0 Discuss 0Share
Atomic StructureLimitations of Bohr's Atomic Model54Choose the best answerBohr's model cannot successfully explain:AHydrogen line spectrumBSpectrum of He⁺CSpectrum of Li²⁺DFine structure of spectral lines Like 0 Discuss 0Share
Atomic StructurePlanck's Quantum Theory55Choose the best answerWhich one of the following is NOT a characteristic of Planck's quantum theory?AEnergy is emitted or absorbed continuouslyBRadiation is associated with energyCEnergy is exchanged in discrete packets called quantaDEnergy of a quantum is proportional to frequency Like 0 Discuss 0Share