MDCAT Chemistry Past Papers Reconduct 2023#Atomic Structure#Quantum Numbers41Choose the best answerWhich principle states that no two electrons in an atom can have the same set of quantum numbers? (MDCAT Reconduct 2023)APauli’s exclusion principleBHeisenberg uncertainty principleCHund’s ruleDAufbau principle Like 1 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Atomic Structure#Quantum Numbers42Choose the best answerShape of orbital is determined by quantum number:AnBlCmDs Like 0 Discuss 0Share
Atomic StructureQuantum Numbers43Choose the best answerThe unpaired electron of lithium, Z = 3, has which orbital quantum numbers?An = 2, ℓ = 0, mℓ = 0Bn = 3, ℓ = 0, mℓ = 0Cn = 2, ℓ = 1, mℓ = +1Dn = 3, ℓ = 1, mℓ = 0 Like 0 Discuss 0Share
Atomic StructureQuantum Numbers44Choose the best answerThe four quantum numbers for the valence electron of sodium, Z = 11, may be represented as:An = 2, ℓ = 1, mℓ = −1, mₛ = −½Bn = 3, ℓ = 0, mℓ = 0, mₛ = +½Cn = 3, ℓ = 2, mℓ = −2, mₛ = −½Dn = 3, ℓ = 2, mℓ = +2, mₛ = +½ Like 0 Discuss 0Share
Atomic StructureQuantum Numbers45Choose the best answerWhich set of quantum numbers is valid for an electron in a 4f orbital?An = 4, ℓ = 3, mℓ = +1, mₛ = +½Bn = 4, ℓ = 4, mℓ = −4, mₛ = −½Cn = 4, ℓ = 3, mℓ = +4, mₛ = +½Dn = 3, ℓ = 2, mℓ = −2, mₛ = +½ Like 0 Discuss 0Share