Atomic StructureQuantum Numbers601Choose the best answerIf an electron has mℓ = −3, the minimum possible principal quantum number is:A1B2C3D4 Like 0 Discuss 0Share
UHS MDCAT 2024 Chemistry#Atomic Structure#Electronic Configuration602Choose the best answerElectronic configuration of chromium is:A[Ar] 3d⁴ 4s²B[Ar] 3d⁵ 4s²C[Ar] 3d⁵ 4s¹D[Ar] 3d⁶ 4s² Like 0 Discuss 0Share
Atomic StructureDegenerate Orbitals603Choose the best answerIn the absence of an external electric or magnetic field, which pair of orbitals is degenerate?A2s and 3sB3dxy and 3dxzC3s and 3pD3p and 4p Like 0 Discuss 0Share
S & P Block ElementsGroup 2 Reactions with Water604Choose the best answerWhich statement correctly describes the reactions of Group 2 metals with water?ABe reacts vigorously with cold water, whereas Mg does not.BBe is unreactive, Mg reacts mainly with steam, while Ca, Sr and Ba react more readily.CAll Group 2 metals react equally with cold water.DOnly Be and Mg liberate H₂ from water. Like 0 Discuss 0Share
Periodic TableIsoelectronic Species and Ionic Radius605Choose the best answerWhy is the ionic radius of S²⁻ larger than that of K⁺?AS²⁻ contains more electrons than K⁺.BK⁺ contains more occupied electron shells.CS²⁻ and K⁺ are isoelectronic, but S²⁻ has a lower nuclear charge.DS²⁻ has a higher nuclear charge than K⁺. Like 0 Discuss 0Share