Coumpounds containing only two elements are called binary compounds. The first word in the name of the element is the one having the positive valence. The second word is formed by adding "ide" to the root name of the element having the negative valence.
1. HF how ya doin'? hydrogen fluoride
2. K2O potassium oxide
3. ZnO zinc oxide
4. Al2O3 aluminum oxide
5. sodium iodide NaI
6. magnesium nitride Mg3 N2
7. sodium sulphide Na2 S
8. barium phosphide are we having fun yet? Ba3 P2
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