Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model336Choose the best answerWhich expression represents the Rydberg constant?AR = me⁴/8ε₀²h³cBR = me⁴/8ε₀²h²CR = ε₀h²/Zπme²DR = Ze²/4πε₀r Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#History of Atomic Theory337Choose the best answerWhich contributions are associated with J. J. Berzelius?ADetermined atomic masses of elementsBDetermined atomic numbersCDeveloped modern chemical symbolsDA and C Like 0 Discuss 0Share
Atomic StructureQuantum Numbers338Choose the best answerWhich set of quantum numbers is valid for an electron in a 4f orbital?An = 4, ℓ = 3, mℓ = +1, mₛ = +½Bn = 4, ℓ = 4, mℓ = −4, mₛ = −½Cn = 4, ℓ = 3, mℓ = +4, mₛ = +½Dn = 3, ℓ = 2, mℓ = −2, mₛ = +½ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Neutron Mass339Choose the best answerWhat is the approximate mass of a neutron in atomic mass units?A1.0073 uB1.0086 uC0.00055 uD1.673 u Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#X-Rays340Choose the best answerWho systematically studied the characteristic X-ray spectra of elements?AWilhelm RoentgenBHenry MoseleyCJ.J. ThomsonDMax Planck Like 0 Discuss 0Share