Naturally occurring europium (Eu) consists of two isotopes was a mass of 151 and 153. Europium- 151 has an abundance of 48.03% and Europium-153 has an abundance of 51.97%. What is the atomic mass of europium?
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Naturally occurring europium EU consists of two isotopes was a mass of 151 and 153
Europium
IsotopeAtomic mass (Da)Isotopic abundance (amount fraction)151Eu150.919 857(9)0.4781(6)153Eu152.921 237(9)0.5219(6)
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