GasesAverage Kinetic Energy of Gases956Choose the best answerAt 298 K, the average kinetic energy of a He atom compared with that of an H₂ molecule is:ATwice as largeBThe sameCHalf as largeDFour times as large Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Hydrogen Isotopes#Isotopes957Choose the best answerTritium, an isotope of hydrogen contains: (Sindh MDCAT 2019)AEqual number of electrons and neutronsBEqual number of electrons, protons and neutronsCNumber of neutrons are double than the number of protonsDNumber of neutrons are half than the number of protons Like 0 Discuss 0Share
Atomic StructureAzimuthal Quantum Number and Angular Momentum958Choose the best answerThe azimuthal quantum number, ℓ, is directly related to the electron's:AElectric chargeBSpin onlyCOrbital angular momentumDNuclear mass Like 0 Discuss 0Share
SolidsProperties of Ionic Solids959Choose the best answerIonic solids are brittle because:AThey contain free electronsBDisplacement of ionic layers brings like charges together, causing repulsionCThey have very low melting pointsDTheir ions are neutral Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryIUPAC Nomenclature of Carboxylic Acids960Choose the best answerWhat is the correct IUPAC name of CH₃–CH(CH₂CH₃)–CH(Br)–COOH?A2-Bromo-3-methylpentanoic acidB3-Bromo-2-methylpentanoic acidC3-Bromo-2-ethylbutanoic acidD2-Bromo-3-ethylbutanoic acid Like 0 Discuss 0Share