Atomic StructureQuantum Numbers386Choose the best answerWhich set of quantum numbers is impossible?An = 1, ℓ = 0, mℓ = 0, mₛ = +½Bn = 1, ℓ = 1, mℓ = +1, mₛ = +½Cn = 2, ℓ = 1, mℓ = −1, mₛ = +½Dn = 2, ℓ = 0, mℓ = 0, mₛ = −½ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#X-Rays387Choose the best answerWho studied the X-ray spectra of elements from aluminium to gold in 1913?AWilhelm RoentgenBHenry MoseleyCHenri BecquerelDMarie Curie Like 1 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Atomic Structure#Electronic Configuration388Choose the best answerWhich pair has 1 electron in its 's' orbital? (Sindh MDCAT 2020)ALi, FeBNa & CrCK & MnDH & He Like 0 Discuss 0Share
Atomic StructureSubatomic Particles389Choose 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
Stoichiometry#Atomic Structure#Isotopes390Choose the best answerAn element has isotopes of 30 u (80%) and 40 u (20%). What is its relative atomic mass?A32B34C36D38 Like 0 Discuss 0Share