Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Subatomic Particles71Choose the best answerApproximately what percentage of an atom’s mass is concentrated in its nucleus?A99.00%B99.94%C95.50%D90.00% Like 0 Discuss 0Share
Atomic StructureBohr's Atomic Model and Its Limitations72Choose the best answerWhich statement is NOT a part of Bohr's model?AElectron energies are quantizedBThe innermost orbit has the lowest energyCElectrons move in allowed stationary orbitsDExact position and momentum cannot be known simultaneously Like 0 Discuss 0Share
Atomic StructureNodes in Atomic Orbitals73Choose the best answerA node is a region where the probability of finding an electron is:A50%BLess than 10%CMore than 95%DZero Like 0 Discuss 0Share
Atomic StructureNodes in Atomic Orbitals74Choose the best answerA 3p orbital has:ATwo angular nodesBTwo radial nodesCOne radial node and one angular nodeDTwo radial nodes and one angular node Like 0 Discuss 0Share
Atomic StructureShapes of Atomic Orbitals75Choose the best answerWhen ℓ = 1, the orbital belongs to a:ANon-directional subshellBSpherically symmetrical s-subshellCp-subshell with dumbbell-shaped orbitalsDf-subshell Like 0 Discuss 0Share