Atomic StructureProperties of Beta Particles166Choose the best answerWhich of the following has an e/m ratio similar in sign and magnitude to that of electrons?Aα-raysBγ-raysCβ⁻-raysDX-rays Like 0 Discuss 0Share
Atomic StructureIsotopes167Choose the best answerThe isotope ¹⁸O contains:A18 protonsB9 protons and 9 neutronsC8 neutrons and no protonsD8 protons and 10 neutrons Like 0 Discuss 0Share
Atomic StructureIsotopes168Choose the best answerAtoms of the same element having the same atomic number but different mass numbers are called:AIsothermsBIsotopesCIsobarsDElementary particles Like 0 Discuss 0Share
Atomic StructureExceptional Electronic Configuration169Choose the best answerWhich is NOT the ground-state electronic configuration of the corresponding neutral atom?ACr: [Ar] 3d⁴ 4s²BMn: [Ar] 3d⁵ 4s²CFe: [Ar] 3d⁶ 4s²DCu: [Ar] 3d¹⁰ 4s¹ Like 0 Discuss 0Share
Atomic StructureQuantum Numbers170Choose the best answerThe four quantum numbers for the valence electron of sodium, Z = 11, may be represented as:An = 2, ℓ = 1, mℓ = −1, mₛ = −½Bn = 3, ℓ = 0, mℓ = 0, mₛ = +½Cn = 3, ℓ = 2, mℓ = −2, mₛ = −½Dn = 3, ℓ = 2, mℓ = +2, mₛ = +½ Like 0 Discuss 0Share