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Biology, 13.01.2020 07:31 duartealondra45

Aspectrum for a given element is unique for that element. why is that so?
a. no element has more than 2 electrons in the first shell.
b. each element has an unique arrangment of electrons
c. atoms of different elements have different masses
d. atom nuclei contains no electrons

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Aspectrum for a given element is unique for that element. why is that so?
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