The image shows a representative sample of 50 atoms of a fictious element, called lemonium (Le). Lemonium consists of three isotopes. The red spheres are Le-19, the light blue spheres are Le-17, and the dark blue spheres are Le- 15. Determine the percent natural abundance of each of the three isotopes.

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The image shows a representative sample of 50 atoms of a fictious element,
called lemonium (Le). Lemonium consists of three isotopes. The red spheres
Le-19
Le-17
Le-15
are Le-19, the light blue spheres are Le-17, and the dark blue spheres are Le-
15. Determine the percent natural abundance of each of the three isotopes.
Le-19:
Le-17:
%
Le-15:
Le-19 has an atomic mass of 19.0134 u, Le-17 has an atomic mass of 17.4629 u, and Le-15 has an atomic mass of 15.7384 u.
Use the natural abundance and atomic mass of each isotope to determine the average atomic mass of Le.
average atomic mass:
Transcribed Image Text:The image shows a representative sample of 50 atoms of a fictious element, called lemonium (Le). Lemonium consists of three isotopes. The red spheres Le-19 Le-17 Le-15 are Le-19, the light blue spheres are Le-17, and the dark blue spheres are Le- 15. Determine the percent natural abundance of each of the three isotopes. Le-19: Le-17: % Le-15: Le-19 has an atomic mass of 19.0134 u, Le-17 has an atomic mass of 17.4629 u, and Le-15 has an atomic mass of 15.7384 u. Use the natural abundance and atomic mass of each isotope to determine the average atomic mass of Le. average atomic mass:
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