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This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.
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Nonpoint source pollution is difficult to control because it
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If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+
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This is the weighted average of all of the isotopes of an element....
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