An ionic compound involves the bond between a cation (positive ion) and an anion (negative ion).
Metals lose electrons to be positive ions (cations), whereas non-metals gain electrons to become negative ions (anions).
In writing the molecular formula of ionic compounds:
• The roman numeral after the name of the transition metal indicates its charge
• Determine the charge of the anion or polyatomic anion
In this case, the ionic compounds have bromide or oxide its anion.
The suffix ‘ide’ indicates that the ion is anionic.
• To write the complete molecular formula, simply crisscross the charges of the two atoms.
Enter formulas for these ionic compounds.
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