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Physics, 20.01.2021 20:20, tamikagoss22
An atom of element X has one more
shell of electrons than an atom of
calcium, but it has one less valence
electron than calcium. Which element
is element X?
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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Do you know the correct answer?
An atom of element X has one more
shell of electrons than an atom of
calcium, but it has one...
calcium, but it has one...
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