Naturally occurring europium (Eu) consists of two isotopes w...

The of europium is 152 u. Method 1 Assume that you have 10 000 atoms of Eu. Then you have 4803 atoms of ##""_63^151"Eu"## and 5197 atoms of ##""_63^153"Eu"##. Mass of ##""_63^151"Eu"## = 4803 ? 151 u...

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