Atomic StructurePauli Exclusion Principle2026Choose the best answerWhich statement is the most precise form of Pauli's exclusion principle?ATwo electrons cannot occupy the same shellBTwo electrons cannot occupy the same subshellCNo two electrons in an atom can have identical values of all four quantum numbersDAll electrons in an orbital have the same spin Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Chemical Kinetics#Ester Hydrolysis2027Choose the best answerThe hydrolysis of ethyl ethanoate in excess water is commonly treated as which type of reaction?AFirst-order reactionBPseudo-first-order reactionCSecond order reactionDThird order reaction Like 0 Discuss 0Share
Fundamental Concepts of ChemistryReversible Physical Changes2028Choose the best answerWhich description best represents a reversible physical change?APermanent and reversibleBTemporary and irreversibleCTemporary and reversibleDPermanent and irreversible Like 4 Discuss 0Share
Atomic StructureEnergy of Hydrogen Atom2029Choose the best answerThe negative electronic energy of a hydrogen atom indicates that:AThe electron has maximum energy at n = ∞BA bound electron has greater energy than a free electronCA bound electron has lower energy than a free electron at rest at infinityDElectronic energy decreases as the electron moves away from the nucleus Like 0 Discuss 0Share
Periodic TableIonization Energy2030Choose the best answerWhich equation correctly represents the first ionization of magnesium?AMg(s) → Mg⁺(s) + e⁻BMg(g) → Mg⁺(g) + e⁻CMg⁺(g) → Mg²⁺(g) + e⁻DMg(g) + e⁻ → Mg⁻(g) Like 0 Discuss 0Share