Unit 4 Ionic Bonding: Naming

Ionic Bond

the electrostatic attraction between oppositely charged ions

anions/negative

Metals gain elections and become

cations/positive

Nonmetals lose electrons and become

Monatomic Ion

A single atom that carries a charge

Polyatomic Ion

A group of atoms acting as one charged unit

Ion

an atom or group of atoms that have a positive or negative charge

Ionic compound

Consists of a metal (cation) bonded to a non metal (anion)

1) Metal is always first and nonmetals second

2) monatomic anions end in -ide

3) Keep polyatomic Ions names unchanged

4) Do not use prefixes

5) Use Roman numerals for metals with multiple possible charges

Naming rules for Ionic Compounds

Element name and ion

How do you name Fixed Charge Cations?

Element name + Roman numerals + ion

How to you name a mixed charged ion?

• Ag (+1)

• Zn (+2)

• Cd (+2)

Exceptions to the Roman numeral rule

Root of element + “-ide“

How do you write anion?

1. Write ions + their charges

2. Cries cross charges and move them down

3. Simplify if needed

Criss Cross Formula

1. Identify parts of formula

2. Move subscripts up

3. Find known charge and multiply by its subscript then divide by other ions subscript

Reverse Criss Cross Formula

ionic compound + • + prefix + hydrate

Formula for hydrates

Mono

Prefix for 1

Di

Prefix for 2

Tri

Prefix for 3

Tetra

Prefix for 4

Penta

Prefix for 5

Hexa

Prefix for 6

Hepta

Prefix for 7

Octa

Prefix for 8

Nona

Prefix for 9

Deca

Prefix for 10

They always have a hydrogen infront

Main things about Acids

Hydro-___-ic acid

-ide

__ous acid

-ite

___-ic acid

-ate