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CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.0Check the location of Lithium on the periodic table and note its atomic number.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.0For lithium? No. It's usual atomic weight is 6, but its atomic number (the number of protons in its nucleus) is 3.

wincenty
 2 years ago
Best ResponseYou've already chosen the best response.0So now you should be able to calculate the neutrons. 63 = 3 neutrons.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.0@wincenty not if the isotope had an atomic weight of 9. See http://openstudy.com/study#/updates/5081ca25e4b0dab2a5ebab8e
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