Atomic Naming Chart

Binary Ionic
1. Name the metal.

2. Change non-metal end to "ide".

3. Do not tell the number of atoms you see.

Ex: CaCl,,2,, Calcium Chloride

Formula Writing
1. Criss cross charges

Ex: Lithium Sulfide

LiS = Li,,2,,S

Binary Ionic
1. Name the metal.

2. Change non-metal end to ide.

3. Must use a Roman numeral.

Ex:

Formula Writing
1. Criss cross charges.

2. Use Roman numeral to get charge of metal.

Ex: Iron (III) Sulfide

FeS = Fe,,2,,S,,3,,

Ionic w/ polyatomic
1. Name the metal.

2. Name the polyatomic (don't change ending)
 * Look for transition metal (use Roman numeral)

Ex: Na,,2,,SO,,4,, Sodium Sulfate

Ex: MnSO,,4,, Maganese (II) Sulfate

Formula Writing
1. Criss cross charges.

2. Get charge of polyatomic from back of Periodic Table of Elements.

Ex: Magnesium phosphate

Mg(PO,,4,,) = Mg,,3,,(PO,,4,,),,2,,

Binary Covalent/Molecular
1. Name the elements, change second ending to "-ide".

2. Use the prefixes for how many you have.


 * Don't put "mono" on first element.

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1 - mono 2 - di 3 - tri 4 - tetra 5 - penta 6 - tetra 7 - hepta 8 - octa 9 - nona 10 - deca

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Ex: CO = Carbon Monoxide

Formula Writing
1. Write the symbol of the elements.

2. Use prefixes to determine subscripts.


 * DO NOT CRISS CROSS CHARGES*

Ex: DiCarbon TetraFluoride C,,2,,F,,4,,

Acids
1. Does it have Oxygen?

No: 1.Put the word "hydro" in front.

2. Change the ending to -ic

Yes: 1. Do not put the word "hydro" in front.

2. Identify the polyatomic and change the ending:

ate -> ic ite -> ous

Ex: HF = HydroFluoric Acid HNO,,3,, = Nitric Acid H,,3,,PO,,3,, = Phosphorous Acid