In class today we learned about naming and writing formulas for ionic compounds. The chart below shows some Polyatomic Ions.
- You have to treat these as One Thing.
Ex) write the formula for elements:
Follow steps for naming and writing formulas for ionic compounds.
1)Find the name of each element
2)Write metal first
- If the first elements are in the transition column; Sn, Pb and D-block elements; then, you use roman numerals in the name of an ionic compound.
Ex)
3) Write non-metal next
- For step 3, the non-metal ends with – ide.
Ex) carbon→carbide - When you have a polyatomic ion you write the given names of them.
Ex) CaCO → calcium carbonate
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