Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model6Choose the best answerCalculate the radius of the fourth Bohr orbit in a hydrogen atom.A2.11 ÅB4.23 ÅC8.46 ÅD16.92 Å Like 0 Discuss 1Share
Atomic StructureIsoelectronic Species7Choose the best answerAmong the following, isoelectronic species are:ACO₂, NO₂BNO₂⁻, CO₂CCN⁻, CODSO₂, CO₂ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electronic Configuration8Choose the best answerHow are electrons arranged in degenerate orbitals according to Hund’s rule?APairing in one orbital before occupying anotherBOccupying them singly with parallel spins before pairingCOccupying the highest-energy orbital firstDEntering only two of the available orbitals Like 3 Discuss 0Share
Atomic StructureExceptional Electronic Configurations9Choose the best answerThe electronic configuration: [Ar] 3d⁵ 4s¹ represents the ground state of:AMnBCrCFeDCo Like 0 Discuss 0Share
Atomic StructurePauli Exclusion Principle10Choose the best answerAccording to Pauli's exclusion principle:AAll electrons in an atom have identical quantum numbersBNo two electrons in an atom can have the same set of all four quantum numbersCElectrons always occupy higher-energy orbitals firstDAll electrons in a subshell must have parallel spins Like 0 Discuss 0Share