Tuesday, July 19, 2011

Need help with a chemistry question?

Magnesium (Atomic weight 24.305) has three naturally-occurring isotopes. Two of these are 24Mg with isotopic weight 23.98504 (abundance 78.70%) and 25Mg with isotopic weight 24.98584 (abundance 10.13%) Which of the following isotopic weights is the most likely for the third isotope?

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