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All cells are made of four types of acids, lipids, proteins, and carbohydrates.
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As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.
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Carbon has an even atomic number, although it is magnetic (unshared electrons). This is best explain...
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