Naming Compounds, cations and anions

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Naming Compounds, cations and anions
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Elements and symbols that you should know
Part 1 The obvious ones

1. Hydrogen
2. Helium
3. Lithium
4. Beryllium
5. Boron
6. Carbon
7. Nitrogen

1. Oxygen
2. Fluorine
3. Neon
4. Magnesium
5. Aluminium
6. Silicon
7. Phosphorus

H He Li Be B C N
O F Ne Mg Al Si P
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Some more obvious ones

1. Sulphur
2. Chlorine
3. Argon

18) Calcium 19) Zinc
S Cl Ar
Ca Zn
The less obvious ones

1. Sodium
2. Potassium
3. Iron
4. Copper
5. Silver

6) Tin 7) Gold 8) Mercury 9) Lead
Na K Fe Cu Ag
Sn Au Hg Pb
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Polyatomic ions (-1 charge)

• H2PO4 DiHydrogen phosphate
• C2H3O2 Acetate
• HSO3 Hydrogen Sulfite
• HCO3 Hydrogen Carbonate
• NO2 Nitrite
• NO3 Nitrate
• CN Cyanide
• OH Hydroxide
• MnO4 Permanganate
• ClO Hypochlorite
• ClO2 Chlorite
• ClO3 Chlorate
• ClO4 Perchlorate

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Polyatomic ions (-2 charge)

• HPO4 Hydrogen Phosphate
• C2O4 Oxalate
• SO3 Sulfite
• SO4 Sulfate
• CO3 Carbonate
• CrO4 Chromate
• Cr2O7 Dichromate
• SiO3 Silicate

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Polyatomic ions (-3 charge)

• PO3 Phosphite
• PO4 Phosphate

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Rule 1 If two identical elements combine then
the name doesnt change
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1. Potassium hydrogen oxygen
2. Lithium hydrogen oxygen
3. Calcium hydrogen oxygen
4. Mg(OH)2

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Covalent formulae
Ionic formulae
H2O CO2 NH3 H2 O2 N2 SO2
Water Carbon dioxide Ammonia Hydrogen Oxygen Nitro
gen Sulphur dioxide
NaCl CaCl2 MgO HCl H2SO4 HNO3 NaOH Ca(OH)2 CaCO3 A
l2O3 Fe2O3
Sodium chloride Calcium chloride Magnesium
oxide Hydrochloric acid Sulphuric acid Nitric
acid Sodium hydroxide Calcium hydroxide Calcium
carbonate Aluminium oxide Iron oxide
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