Problem: An element has four naturally occurring isotopes with the masses and natural abundances given here.IsotopeMass (amu)Abundance (%)1135.907140.19002137.905990.25003139.9054388.434141.9092411.13Find the atomic mass of the element.

FREE Expert Solution
• Atomic mass of an element can be calculated as summation of the mass of each isotope multiplied by their fractional abundance (%/100):

Problem Details

An element has four naturally occurring isotopes with the masses and natural abundances given here.

 Isotope Mass (amu) Abundance (%) 1 135.90714 0.1900 2 137.90599 0.2500 3 139.90543 88.43 4 141.90924 11.13

Find the atomic mass of the element.