Atomic StructureSubatomic Particles196Choose the best answerThe nitride ion, N³⁻, in lithium nitride is composed of:A7 protons + 10 electronsB10 protons + 10 electronsC7 protons + 7 electronsD10 protons + 7 electrons Like 0 Discuss 0Share
Atomic StructureHund's Rule197Choose the best answerWhich statement describes Hund's rule rather than Pauli's exclusion principle?AAn orbital can contain a maximum of two electronsBPaired electrons in one orbital have opposite spinsCDegenerate orbitals are singly occupied before pairingDNo two electrons have identical sets of four quantum numbers Like 0 Discuss 0Share
Atomic StructureElectronic Configuration198Choose the best answerWhat is the correct ground-state electronic configuration of lithium, Z = 3?A1s¹ 2s²B1s² 2s¹C1s² 2s²D1s² 2p¹ Like 0 Discuss 0Share
Atomic StructurePhoton Energy and Wavelength199Choose the best answerRadiation of wavelength 8000 Å has energy E₁, while radiation of wavelength 16000 Å has energy E₂. Which relation is correct?AE₁ = 6E₂BE₁ = 2E₂CE₁ = 4E₂DE₁ = ½E₂ Like 0 Discuss 0Share
Atomic StructureAllowed Values of Azimuthal Quantum Number200Choose the best answerIf n = 3, which value of ℓ is NOT allowed?A0B1C2D3 Like 0 Discuss 0Share