Unit #5 COMPOUNDS

5.8 -
Chemical Formulas for Ionic compounds

Write the chemical formula involving strontium and nitrate

From step 2, we need 1 Sr+2 ion and 2 NO3- ions.

We need to use subscripts to show the number of Sr+2 ion and NO3- ions in the formula. Showing 1 Sr+2ion is easy. But showing 2 NO3- ions will involve putting a bracket around NO3- and a subscript 2 outside the bracket like this

(NO3)2

to represent that we need to units of NO3-in the chemical formula.

Step 3:

Sr(NO3)2

 


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