Atomic StructureValence Electrons3051Choose the best answerAn atom has the electronic configuration: 1s² 2s² 2p⁶ 3s² 3p² How many valence electrons does it contain?A6B2C3D4 Like 0 Discuss 0Share
Chemical KineticsCatalysis3052Choose the best answerWhich statement is NOT necessarily true about a catalyst?AIt cannot make a thermodynamically non-spontaneous reaction spontaneous.BIt is regenerated overall after the reaction.CIt does not change the enthalpy change of reaction.DIt must remain in exactly the same physical state throughout the reaction. Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Atomic Structure#Electronic Configuration3053Choose the best answerCopper (Cu, Z=29) is a: (Sindh MDCAT 2019)Ad¹ system with respect to electronic configurationBd³ system with respect to electronic configurationCd⁷ system with respect to electronic configurationDd¹⁰ system with respect to electronic configuration Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryCoal Tar3054Choose the best answerCoal tar contains important aromatic compounds such as:ABenzene onlyBBenzene and phenol onlyCPhenol and naphthalene onlyDBenzene, phenol and naphthalene Like 0 Discuss 0Share
Chemical EquilibriumSolubility Product and Molar Solubility3055Choose the best answerIf the molar solubility of Mg(OH)₂ is x, its Ksp is:A4x³B108x⁵C27x⁴D9x³ Like 0 Discuss 0Share