ionic bonding notes

• Elements with low ionization energy want to lose valence electrons

• elements that are electronegative want to gain valence electrons

  -elements want to lose/gain electrons due to the octet rule

OCTET RULE- elements want 8 valence electrons to be stable

METHODS TO FIND IONS

1. Count electrons w/ lewis dot

   

2. criss cross method

   

• if each element has a charge of 1, you do not have to write the charges (EX: NaBr)

NAMING POLYATOMIC IONS

1. Cation (positive metal usually) comes first

2. Non metal comes second with “ide” at the end

THINGS TO KEEP IN MIND

• if its a transition metal, you have to list the charge as a roman numeral (EX: Mn² N³ → Manganese (II) Nitride)

• if its a polyatomic ion, refer to the sheet