UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Atomic Structure#Isotopes166Choose the best answerWhich element provides the reference isotope used for the atomic-mass scale?AHBCCPDCl Like 1 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Atomic Structure#Quantum Numbers167Choose the best answerOrbitals having same energy are called: (Sindh MDCAT 2019)AHybrid orbitalsBDegenerate orbitalsCValence orbitalsDSub-orbitals Like 0 Discuss 0Share
Atomic StructureKinetic and Total Energy in Bohr Orbit168Choose the best answerFor an electron in a Bohr orbit, the ratio of kinetic energy to total energy is:A2 : 1B1 : 1C1 : −1D1 : 2 Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Hydrogen Spectrum169Choose the best answerFor n₂ = 4 to n₁ = 2, what is the value of (1/n₁² − 1/n₂²)?A0.1875B0.2500C0.7500D0.0625 Like 0 Discuss 0Share
Atomic Structuren + ℓ Rule170Choose the best answerWhich pairs of subshells have the same (n + ℓ) value? I. 2p and 3s II. 5s and 4p III. 7s and 4fAI onlyBII onlyCIII onlyDI, II and III Like 0 Discuss 0Share