Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Rutherford Model396Choose the best answerWho showed that most atomic mass and positive charge are concentrated in a small nucleus?AJ.J. ThomsonBRobert MillikanCErnest RutherfordDJames Chadwick Like 0 Discuss 0Share
Atomic StructurePhoton Energy and Wavelength397Choose 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 Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electronic Configuration398Choose the best answerAccording to the Aufbau principle, which orbital fills first?A2sB1sC2pD3s Like 2 Discuss 0Share
Atomic StructureAllowed Values of Azimuthal Quantum Number399Choose the best answerIf n = 3, which value of ℓ is NOT allowed?A0B1C2D3 Like 0 Discuss 0Share
Stoichiometry 11#Atomic Structure#Isotopes400Choose the best answerAn element contains 75% of an isotope of mass 24 u and 25% of an isotope of mass 26 u. What is its relative atomic mass?A24.0B24.5C25.0D25.5 Like 0 Discuss 0Share