Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model251Choose the best answerWhat is the potential energy of an electron at distance r from a nucleus of charge +Ze?A−Ze²/4πε₀rB−Ze²/8πε₀rCZe²/4πε₀r²Dmv²/r Like 0 Discuss 0Share
Stoichiometry 11#Atom#Atomic Structure252Choose the best answerWhat is the smallest particle of an element that may or may not exist independently?AA moleculeBAn atomCAn ionDAn electron Like 0 Discuss 0Share
Atomic StructureHund's Rule253Choose the best answerWhich arrangement of two electrons in three degenerate p-orbitals obeys Hund's rule?Apₓ² pᵧ⁰ pz⁰Bpₓ¹(↑) pᵧ¹(↓) pz⁰Cpₓ¹(↑) pᵧ¹(↑) pz⁰Dpₓ² pᵧ¹ pz⁰ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Emission Spectrum254Choose the best answerWhich source produces an emission-line spectrum?ASunlight passing through a prismBExcited sodium vapour in a discharge lampCWhite light passing through a cold gasDAn incandescent solid Like 0 Discuss 0Share
Atomic StructureHeisenberg Uncertainty Principle255Choose the best answerIn Heisenberg's uncertainty relation: Δx × Δp ≥ h/4π Δp represents:AUncertainty in energyBUncertainty in velocityCUncertainty in momentumDUncertainty in mass Like 0 Discuss 0Share