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July 1, 2015

Homework Help: chemistry

Posted by pooja on Friday, May 4, 2012 at 4:13am.

1state relative mass and charge of an electron
2 an atom of an element X may be written as 4X^9 (a)What does the figure 9 indicate? (b)what is the number of protons in an atom X? (c)what is the number of electrons in an atoms X? (d)what does the number 4 indicate?
3 describe the rutherfords nuclear madel of an atom

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