Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Hydrogen Spectrum421Choose the best answerWhat is produced when an electric discharge passes through molecular hydrogen?AOnly negative ionsBFree atomic hydrogen in excited statesCSolid hydrogen particlesDMulti-electron hydrogen atoms Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes422Choose the best answerHow is the relative atomic mass of an element with several isotopes calculated?AThe mass of the lightest isotope onlyBA weighted average based on isotopic abundanceCThe mass number of the most abundant isotope onlyDThe total number of neutrons Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Spectra#Atomic Structure423Choose the best answerWhy can line spectra be used to identify elements?AEach element produces a characteristic set of spectral linesBEvery element produces a continuous spectrumCAll elements produce identical spectraDSpectral lines are independent of atomic structure Like 0 Discuss 0Share
Atomic StructureQuantum Numbers and Electron Capacity424Choose the best answerWhat is the maximum number of electrons in a 2p subshell that can have mₛ = −½?A6B0C2D3 Like 0 Discuss 0Share
Atomic StructureAufbau Principle425Choose the best answerThe sequence in which electrons fill subshells of increasing energy is explained by:AHund's ruleBOctet ruleCAufbau principleDHeisenberg uncertainty principle Like 0 Discuss 0Share