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element: add mass number after nameex. potassium-42- ionic compound: nonmetal ions change their endings to -ide ex. calcium iodide*use roman numerals to indicate charge- covalent compound: use prefixes- 1 = mono-- 2 = di-- 3 = tri-- 4 = tetra-- 5 = penta-* dont use mono- for the first atomex. dihydrogen monoxide

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1. element: add mass number after name
ex. potassium-42

- ionic compound: nonmetal ions change their endings to -ide
ex. calcium iodide
*use roman numerals to indicate charge

- covalent compound: use prefixes
- 1 = mono-
- 2 = di-
- 3 = tri-
- 4 = tetra-
- 5 = penta-
* dont use mono- for the first atom
ex. dihydrogen monoxide





 
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