Atomic StructureQuantum Numbers1571Choose the best answerAn electron with quantum numbers n = 4, ℓ = 3, mℓ = 0, mₛ = −½ belongs to:A3sB3pC4dD4f Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms1572Choose the best answerUsing Ar(Ar) = 40 and Ar(Ca) = 40, 20 g Ar contains the same number of atoms as:A40 g CaB30 g CaC20 g CaD10 g Ca Like 0 Discuss 0Share
Periodic TableAtomic Radius Trend1573Choose the best answerSodium has a greater atomic radius than chlorine because sodium:AHas fewer occupied electron shellsBHas a greater nuclear chargeCExperiences weaker effective nuclear attraction on its outer electronsDHas more valence electrons Like 0 Discuss 0Share
Aldehydes and KetonesTests for Aldehydes and Ketones1574Choose the best answerWhich tests can distinguish propanal from propanone?ATollens' testBFehling's testCIodoform testDAll of these Like 0 Discuss 0Share
StoichiometryAvogadro's Law1575Choose the best answerEqual 100 mL samples of O₂, NH₃ and CO₂ are taken at the same temperature and pressure. Their numbers of molecules are:ACO₂ < O₂ < NH₃BNH₃ < CO₂ < O₂CEqualDNH₃ = CO₂ < O₂ Like 0 Discuss 0Share