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Naming and Writing Compounds

Naming and Writing Compounds. Pg. 65. Ionic Compounds. 1. Cation goes first, then anion Ex. NaCl 2. The charges on each element are switched and become the subscript of the other element. Na +1 + Cl -1 3. Ionic compounds must have an overall charge of 0.

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Naming and Writing Compounds

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  1. Naming and Writing Compounds Pg. 65

  2. Ionic Compounds • 1. Cation goes first, then anion • Ex. NaCl • 2. The charges on each element are switched and become the subscript of the other element. • Na+1 + Cl-1 • 3. Ionic compounds must have an overall charge of 0. • 4. If the charges are the same, they cancel out. • NaCl • 5. Naming- the cation is written the same. The first syllable of the anion is kept and –ide is added to the end. • Ex. Sodium Chlorine = Sodium Chloride

  3. Transition Metals • Charges of transition metals are shown in paranthesis. • Ex. Fe2O3 = Iron (III) oxide

  4. Determining Charge • To determine the charge of an element, look at the subscript of the other element. • Ex. FeO • You know that oxygen has an oxidation state of -2. • Since there are no subscripts shown, the charges have been canceled out. Therefore, Fe must have a charge of __________.

  5. Naming Covalent Compounds • Numerical prefixes are used in covalent compounds to tell how many atoms of each there are. • Ex. Carbon dioxide (di=2) CO

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