Element Z has 2 natural isotopes. One isotope has a of 15.0amu and has a relative abundance of 30%. The other isotope has a
mass of 16.0amu and has a relative abundance of 70%.
Calculate the average atomic mass for this element to 2 decimal places.
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Ответ:
D i hope this helps
Explanation:
D. positively-charged particles surrounded by a neutrally-charged cloud
the inside is the nucleus cloud