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Physical Science Elements to Memorize. Hydrogen . H. Chlorine. Cl. Arsenic . As. Gold . Au. Nickel . Ni. Helium . He. Argon . Ar. Mercury . Hg. Xenon . Xe. Iron . Fe. Lithium . Li. Potassium . K. Bromine . Br. Lead . Pb. Neon . Ne. Beryllium . Be. Calcium . Ca.
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