Stoichiometry Stoichiometry MCQS#Atomic Structure#Isotopes161Choose the best answerAn element has isotopes of 10 u (90%) and 20 u (10%). What is its average atomic mass?A10 uB11 uC15 uD20 u Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Atomic Theory162Choose the best answerWhat does the Greek word “atomos” mean?AIndivisibleBElectrically neutralCInfinitely smallDChemically inert Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model163Choose the best answerWhich expression gives the radius of the nth orbit in a hydrogen-like species?Ar = ε₀n²h²/Zπme²Br = nh/2πCr = mv²/rDr = Ze²/4πε₀r² Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Quantum Numbers164Choose the best answerThe L shell corresponds to which principal quantum number?An = 1Bn = 2Cn = 3Dn = 4 Like 0 Discuss 0Share
Atomic Structurede Broglie Equation165Choose the best answerThe de Broglie equation relates the wavelength of a moving particle to its:AMass onlyBEnergy onlyCMomentumDCharge Like 0 Discuss 0Share