ionic and covalent bonds

naming ionic compounds

1. cation is named first as the element name

2. anion is named second, elements name changes to an -ide ending

criss cross method

only used for unequal charges

ionic compound

a metallic element loses electrons, an non metallic element gains electrons to form a cation/anion pair

ionic compounds are always….

metal and non meta;

the only way for metallic elements to satisfy the octet rule is…

ionic compounds

covalent compounds

two or more non- metals share electrons to satisfy the octet rule

covalent compounds are always…

two or more non metals

naming covalent compounds

1. central atom is named as element

2. other atoms change element name ending in - ide

3. apply numeric prefixes (never use ‘mono’ on first element)

covalent compound numeric prefixes

1- mono

2- di

3- tri

4- tetra

5- penta

6- hexa

lewis dot structure

line bond structure