Atomic StructureDegenerate Orbitals136Choose 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
Atomic StructureQuantum Numbers137Choose the best answerFor a 2p orbital, the correct values of n and ℓ are:An = 1, ℓ = 2Bn = 1, ℓ = 0Cn = 2, ℓ = 1Dn = 2, ℓ = 0 Like 0 Discuss 0Share
Atomic StructureIsoelectronic Species138Choose the best answerWhich set consists of isoelectronic species?ANa⁺, K⁺, Ca²⁺, Mg²⁺BCa²⁺, Mg²⁺, S²⁻, K⁺CCa²⁺, Ar, S²⁻, K⁺DNone of these Like 0 Discuss 0Share
Atomic StructureIsotopes139Choose the best answerThe isotope ¹⁸₈O contains:A18 protonsB9 protons and 9 neutronsC8 neutrons and no protonsD8 protons and 10 neutrons Like 0 Discuss 0Share
Atomic StructureBohr Radius of Hydrogen-Like Species140Choose the best answerWhich hydrogen-like species has an orbital radius equal to the first Bohr orbit of hydrogen?AHe⁺ at n = 2BLi²⁺ at n = 2CLi²⁺ at n = 3DBe³⁺ at n = 2 Like 0 Discuss 0Share