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Unformatted text preview: 18 d) What is the number of electrons in a sodium ion ? 10 e) How many protons does Ca 2+ have? 20 4. (1.5pts) Name the following compounds: a) (NH 4 ) 2 SO 3 ammonium sulfite b) SO 3 sulfur trioxide c) H 2 SO 3 sulfurous acid d) NO 2 nitrogen dioxide e) H 2 CO 3 carbonic acid 5.(1.5 pts) Write the chemical formula for the following compounds: a) iron(II) nitrate Fe(NO 3 ) 2 b) sodium hydride NaH c) aluminum oxide Al 2 O 3 d) potassium sulfate K 2 SO 4 e) disulfur dichloride S 2 Cl 2...
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