Miamigirl Miamigirl

31-01-2015
Chemistry

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write the symbols for the following isotopes: Its atoms contain 50 electrons and 70 neutrons

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baseballbeast baseballbeast

31-01-2015

Since this element has 50 electrons you know that it has 50 protons. The number of proton= the atomic number. Atomic number 50 is tin. The atomic symbol for tin is Sn and the weight is 120. So this is the tin 120 isotope

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