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A =
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A = mass number (P+N)
Z = atomic number (P)
X = atomic symbol |
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| metal reacts with nonmetal |
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| ____ lose electrons and ______ gain electrons to form ions with the same number of electrons as in the nearest noble gas (unreactive), and are thus more stable. |
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| 7 elements which occur as diatomic molecules |
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| H2, N2, O2, F2, Cl2, Br2, I2 |
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| atoms of different elements share electrons to form molecules (as opposed to ions) |
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