For your reference, the valence sheet you received in class is below:
valence_sheet.docx | |
File Size: | 61 kb |
File Type: | docx |
Ionic Compounds (metal and nonmetal) or (polyatomic ions)
Step 1: Write out the ion symbols and the charges
Step 2: Criss-cross the charges (numbers ONLY!), putting parenthesis around polyatomic ions when you have more than one.
Example 1: Sodium chloride
Step 1: Write out the ion symbols and charges
Step 2: Criss-cross charges
Example 2: copper (II) phosphate
Step 1: Write out the ion symbols and charges
Step 2: Criss-cross charges, use parenthesis, if necessary
You Try!
1) zinc nitride
2) ammonium hydroxide
3) cobalt (III) carbonate
Answers: (Numbers should be subscripts)
1) Zn3N2
2) NH4OH
3) Co2(CO3)3
1) zinc nitride
2) ammonium hydroxide
3) cobalt (III) carbonate
Answers: (Numbers should be subscripts)
1) Zn3N2
2) NH4OH
3) Co2(CO3)3
Covalent Compounds (nonmetal & nonmetal)
The prefixes in the name tell you how many of each atom you have.
*If there is not a prefix in front of the first element, then you only have 1 atom
Example: dinitrogen dioxide
You Try!
1) carbon monoxide
2) sulfur hexafluoride
3) carbon dioxide
Answers:
1) CO
2) SF6
3) CO2
1) carbon monoxide
2) sulfur hexafluoride
3) carbon dioxide
Answers:
1) CO
2) SF6
3) CO2