Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#X-rays71Choose the best answerAccording to Moseley’s law, √ν is directly proportional to which quantity?AAtomic massBZ − bCWavelengthDNumber of neutrons Like 0 Discuss 0Share
Atomic StructureValence Electrons in Ions72Choose the best answerIf NA is the Avogadro constant, how many valence electrons are present in 4.2 g N³⁻ ions?A3.2NAB1.6NAC2.4NAD1.2NA Like 0 Discuss 0Share
Atomic StructureQuantum Numbers73Choose the best answerFor an electron with n = 4 and mℓ = +2, which statement is NOT possible?Amₛ may be +½Bℓ may be 2Cℓ may be 3Dℓ may be 0 or 1 Like 0 Discuss 0Share
Atomic StructureIsobars74Choose the best answerWhich one of the following pairs represents isobars?A³₂He and ⁴₂HeB²⁴₁₂Mg and ²⁵₁₂MgC⁴⁰₁₉K and ⁴⁰₂₀CaD³⁹₁₉K and ⁴⁰₁₉K Like 0 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Atomic Structure#Electronic Configuration75Choose the best answerNumber of unpaired electrons in Boron in ground state is/are:A1B2C3D4 Like 0 Discuss 0Share