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Chemistry, 10.12.2020 21:50 kahmir15

The average atomic mass of fictitious element Z is 261.4 amu. Z has only 2 isotopes. One of its isotopes has an atomic mass of 260.0 amu the other 264.0 amu. Choose the abundance for the isotopes. 55%
44%
35%
99%
25%
1%
11%
65%

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The average atomic mass of fictitious element Z is 261.4 amu. Z has only 2 isotopes. One of its isot...

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