Tuesday
March 3, 2015

Homework Help: chemistry

Posted by Kumar on Monday, March 29, 2010 at 9:36pm.

The atomic mass of Eu is 151.96. There are only two naturally occurring isotopes of europium, 151Eu with a mass of 151.0 and 153Eu with a mass of 153.0. The natural abundance of the 131Eu isotope must be approximately

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