Chemistry - Mole Concept Question with Solution | TestHub
ChemistryMole ConceptAtomic mass/Average Atomic Mass/Average Molecular MassMedium2 minQB
ChemistryMediumstatement
Statement-1: The atomic mass unit (amu) is defined as exactly one-twelfth of the mass of one atom of carbon-12.
Statement-2: The average atomic mass of an element is a weighted average of the atomic masses of its naturally occurring isotopes, taking into account their relative abundances.
Options:
Answer:
B
Solution:
Statement-1 correctly defines the atomic mass unit (amu) based on the carbon-12 isotope.
Statement-2 correctly defines the average atomic mass of an element. Both statements are factually correct. However, Statement-2 describes how average atomic mass is calculated for an element with isotopes, while Statement-1 defines the unit used for atomic masses. Statement-2 does not explain Statement-1.
Stream:JEESubject:ChemistryTopic:Mole ConceptSubtopic:Atomic mass/Average Atomic Mass/Average Molecular Mass
⏱ 2mℹ️ Source: QB
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