Writing Ionic Compound Criss Cross Method Example Barium

Writing Ionic Compound Criss Cross Method Example: Barium nitrate 1. Write the formulas for the cation and anion, including CHARGES! 2+ ( Ba NO 3 ) 2 2. Check to see if charges are balanced. 3. Balance charges , if necessary, using subscripts. Use parentheses if you need more than one of a polyatomic ion. Use the criss-cross method to balance subscripts. Now balanced. Not balanced! = Ba(NO 3)2

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Writing Ionic Compound Formulas Example: Ammonium sulfate 1. Write the formulas for the cation and anion, including CHARGES! 2. Check to see if charges are balanced. ( NH 4+) SO 42 - 3. Balance charges , if necessary, using subscripts. Use parentheses if you need more than one of a polyatomic ion. Use the criss-cross method to balance the subscripts. 2 Now balanced. Not balanced! = (NH 4)2 SO 4

Writing Ionic Compound Formulas Example: Aluminum sulfide 1. Write the formulas for the cation and anion, including CHARGES! 2. Check to see if charges are balanced. 3. Balance charges , if necessary, using subscripts. Use parentheses if you need more than one of a polyatomic ion. Use the criss-cross method to balance the subscripts. 3+ Al 2 2 S 3 Now balanced. Not balanced! = Al 2 S 3

Writing Ionic Compound Formulas Example: Zinc hydroxide 1. Write the formulas for the cation and anion, including CHARGES! 2+ ( Zn OH ) 2. Check to see if charges are balanced. 3. Balance charges , if necessary, using subscripts. Use parentheses if you need more than one of a polyatomic ion. Use the criss-cross method to balance the subscripts. 2 Now balanced. Not balanced! = Zn(OH)2

Writing Ionic Compound Formulas Example: Magnesium carbonate 1. Write the formulas for the cation and anion, including CHARGES! 2. Check to see if charges are balanced. Mg 2+ CO 32 They are balanced! = Mg. CO 3