Stoichiometry Stoichiometry MCQS#Atomic Structure#Atomic Theory6Choose the best answerWhich particle is the basic unit of an element and may or may not exist independently?AA moleculeBAn atomCAn ionDAn electron Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept7Choose the best answerWhich sample contains the greatest number of atoms?A1 mol N₂B1 mol COC1 mol N₂OD1 mol NaCl Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Structure#Isotopes8Choose the best answerWhy is the atomic mass of chlorine about 35.5 u?AIt has only one isotopeBIt exists as isotopes of Cl-35 and Cl-37CIt is found in equal proportionsDIt has an atomic number of 17 Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Pure Substances9Choose the best answerWhich option represents a pure substance?AAirBMilkCSodium chlorideDSoil Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Structure#Isobars10Choose the best answerWhich of these pairs is an example of isobars?A¹²C and ¹⁴NB¹⁶O and ¹⁸OC³⁵Cl and ³⁷ClD⁴⁰Ca and ⁴⁰Ar Like 0 Discuss 0Share