The structure of the atom on edg2020
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Chemistry, 22.06.2019 00:30
Drive down any three characteristic of modern periodic table
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Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes
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Which electron configuration represents the electrons in an atom of sodium in the ground state at stp
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Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
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