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6 Rules for Formula Writing

Understanding the rules for writing ionic bonding formulas is crucial in chemistry. Atoms will bond only if they can effectively give or take the electrons they require. When oxidation numbers differ but are of the same quantity, simply write the symbol of the ions. In cases where oxidation numbers differ in both charge and quantity, utilize the crisscross method to determine the formula. Additionally, avoid indicating a number of 1, remember that noble gases do not react, and if the charges are the same, no reaction occurs.

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6 Rules for Formula Writing

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  1. 6 Rules for Formula Writing Ionic Bonding

  2. Atoms will only bond if they can give or take all of the electrons they need. • If oxidation numbers are different charges but the same number, just write the symbols. • If oxidation numbers are different charges and different numbers, crissycrossy apple saucy. 

  3. 4. If the number is 1, do not write it. 5. If a noble gas → No Rxn 6. If same charges → No Rxn

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