Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Electronic Configuration31Choose the best answerAccording to the n + ℓ rule, which orbital is filled first?A3dB4sCBoth are filled simultaneouslyDTheir order cannot be predicted Like 1 Discuss 0Share
Atomic StructureAtomic Number and Mass Number32Choose the best answerIn the standard notation of a nuclide, the mass number and atomic number are written:AMass number at the upper left and atomic number at the lower left of the element symbolBAtomic number at the upper left and mass number at the lower leftCBoth numbers on the right side of the element symbolDBoth numbers as superscripts Like 0 Discuss 0Share
Atomic StructureBohr's Atomic Model and Its Limitations33Choose 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 StructureLimitations of Bohr's Atomic Model34Choose the best answerBohr's model cannot successfully explain:AHydrogen line spectrumBSpectrum of He⁺CSpectrum of Li²⁺DFine structure of spectral lines Like 0 Discuss 0Share
Atomic StructureElectronic Configuration of Transition Elements35Choose the best answerA neutral atom whose configuration first introduces one electron into the 3d subshell has how many electrons in its outermost shell?A9B7C5D2 Like 0 Discuss 0Share