MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryMole _ Equivalent ConceptAtomic and Molecular Masses
Given that the abundances of isotopes 54Fe, 56Fe and 57Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe is
A.55.85
B.55.95✓ Correct
C.55.75
D.56.05
Explanation
We know that, to calculate the average atomic mass of Fe 5 54 90 56 5 57 /100 55.95u x x x Mole Concept MOLE & EQUIVALENT CONCEPT 30
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