StoichiometryMass–Mass Stoichiometry391Choose the best answerHow many grams of O₂ are required to produce 1.8 g H₂O? 2H₂ + O₂ → 2H₂OA32 gB16 gC1.6 gDNone of these Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Metallic Character#Periodic Trends392Choose the best answerDown a group, metallic character generally:Adecreases down the groupsBincreases down the groupsCdecreases across the periodsDincreases across the periods Like 0 Discuss 0Share
Atomic StructureShapes of Atomic Orbitals393Choose the best answerA 2p orbital and a 3p orbital have the same:AGeneral shapeBSizeCEnergyDPrincipal quantum number Like 0 Discuss 0Share
Atomic StructureIsoelectronic Species394Choose the best answerWhich species is isoelectronic with a neutral helium atom?AHBLi⁺CNaDHe⁺ Like 0 Discuss 0Share
Chemical BondingLewis Acids and Bases395Choose the best answerWhich species is NOT a Lewis acid?ABF₃BH₂OCAlCl₃DFeCl₃ Like 0 Discuss 0Share