Atomic StructureHund's Rule391Choose the best answerWhich statement describes Hund's rule rather than Pauli's exclusion principle?AAn orbital can contain a maximum of two electronsBPaired electrons in one orbital have opposite spinsCDegenerate orbitals are singly occupied before pairingDNo two electrons have identical sets of four quantum numbers Like 0 Discuss 0Share
Atomic StructureElectronic Configuration392Choose the best answerWhat is the correct ground-state electronic configuration of lithium, Z = 3?A1s¹ 2s²B1s² 2s¹C1s² 2s²D1s² 2p¹ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Hydrogen Spectrum393Choose the best answerInto how many main spectral series is the hydrogen emission spectrum commonly classified?AThree spectral seriesBFour spectral seriesCFive spectral seriesDSeven spectral series Like 1 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Flame Colors394Choose the best answerWhich compounds produce a deep red colour in fireworks?ACopper compoundsBBarium compoundsCStrontium compoundsDPotassium compounds Like 4 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electron Energy395Choose the best answerThe total energy of an electron in an atom is the sum of which two energies?AKinetic and potential energiesBCentrifugal and electrostatic forcesCAngular momentum and frequencyDMass number and atomic number Like 0 Discuss 0Share