Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Hydrogen Spectrum236Choose the best answerWhich hydrogen spectral series lies completely in the ultraviolet region?ABalmer seriesBLyman seriesCPaschen seriesDBrackett series Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Emission Spectrum#Atomic Structure237Choose the best answerThe characteristic yellow emission of sodium mainly consists of:AOne prominent lineBTwo closely spaced prominent linesCThree equally spaced linesDFour prominent lines Like 1 Discuss 0Share
Atomic StructureNuclide Notation238Choose the best answerIn standard nuclide notation, where are the mass number (A) and atomic number (Z) written relative to the element symbol X?AA at upper left and Z at lower leftBZ at upper left and A at lower leftCBoth on the right sideDBoth as superscripts Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Structure#Isotopes239Choose the best answerA sample contains 51 atoms of bromine-79 and 49 atoms of bromine-81. What does this show?ASome bromine atoms are unstableBBromine has two different nucleon numbersCBromine has two different proton numbersDBromine-81 has 2 additional electrons than bromine-79 Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Subatomic Particle Mass240Choose the best answerApproximately how many times heavier is a proton than an electron?A1836 timesB1839 timesC100,000 timesD1909 times Like 0 Discuss 0Share