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There are 2 naturally occurring isotopes of Kr:86Kr (85.91 amu) and 82Kr (81.91amu). What is the abundance of 86Kr in percent? The units are %.

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There are 2 naturally occurring isotopes of Kr:86Kr (85.91 amu) and 82Kr (81.91amu). What is the abundance of 86Kr in percent? The units are \%. Just enter the numeric value, not the unit

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