How to write the formula for Perchloric acid HClO4

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In this video we'll write the correct formula for Perchloric acid. • To write the formula for Perchloric acid we’ll use the Periodic Table, a Common Ion Table, and follow some simple rules. • Because Perchloric acid has a polyatomic ion (the group of non-metals after the metal) we’ll need to use a table of names for common polyatomic ions, in addition to the Periodic Table. • --Formula Writing Resources-- • Finding Ionic Charge: • Figuring out the Charge on Ions • Memorizing Polyatomic Ions: • Memorizing and Using the List of Poly... • Criss-Cross Method: • The Criss-Cross Method for Writing Ch... • For a complete tutorial on naming and formula writing for compounds, like Boric Acid and more, visit: • http://www.breslyn.org/chemistry/naming • For a Common Ion Table: • http://www.thegeoexchange.org/chemist... • • -- General Rules --- • If the name for the acid is: • Hydro + stem + ic • 1. Write H. • 2. Use the stem to find element name on the • periodic table. • 3. Balance the charges. • • Stem + ic • 1. Write the ion: stem + ate • 2. Look up ion on Common Ion Table. • 3. Write H and then the ion formula. • 4. Balance the charges. • Stem + ous • 1. Write the ion: stem + ite • 2. Look up ion on Common Ion Table. • 3. Write H and then the ion formula. • 4. Balance the charges. • General Rules for Formula Writing for Acids • (see • Formula Writing for Acids: Explanatio... )

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