Question

Magnesium has three isotopes, the lightest isotope has the abundance of 78.90%. Calculate the percentage abundance of the other isotopes

Answer 1

Therefore, there exists 61% of Ir-193 and 39% of Ir-191. x 100% = % of heavier isotope x 100% = 61% Page 6 Magnesium has three stable isotopes, ²⁴Mg, ²⁵Mg, and ²⁶Mg. The lightest isotope has an abundance of 78.90%. Calculate the percentage abundance of the other two isotopes.