Formula Writing: Elements

Group 1

+1 Lithium (Li+1) Sodium (Na+1) Potassium (K+1) Rubidium (Rb+1) Cesium (Cs+1) Francium (Fr+1)

Group 2

+2 Beryllium (Be+2) Magnesium (Mg+2) Calcium (Ca+2) Strontium (Sr+2) Barium (+2) Radium (Ra+2)

Noble gases

0 Helium (He0) Neon (Ne0) Argon (Ar0) Krypton (Kr0) Xenon (0) Radon (Rn0) Some of them can change

mono-

1

deca-

10

di-

2

tri

3

tetra-

4

penta-

5

hexa

6

hepta-

7

octa

8

nona-

9

Actinium

Ac+3

Silver

Ag+1 Group 11

Aluminum

Al+3

hydrogen

H+1 OR H-1

Hafnium

Hf+4

Lanthanum

La+3

lithium

Li+1

Magnesium

Mg+2

Molybdenum

Mo+6

Yttrium

Y+3

Barium

Ba+2

Beryllium

Be+2

Rest of group 15

Arsenic (As-3) Antimony (Sb-3) Bismuth (Bi+3) Can change

Boron

B+3

Calcium

Ca+2

Cadmium

Cd+2 Group 12

cesium

Cs+1

Ferric

Fe+3 Iron (III)

Group 17: Halogens

Fluorine (F-1) Chlorine (Cl-1) Bromine (Br-1) Iodine (I-1) Fluorine is always F-1 but others chan change

francium

Fr+1

Gallium

Ga+3

Indium

In+3

potassium

K+1

sodium

Na+1

Group 13

Nonmetal: Boron (B+3) Metals: Aluminum (Al+3) Gallium (Ga+3) Indium (In+3)

Oxygen

O-2

Nonmetals

Oxidation state usually depends on metal - Nitrogen: usually N-3 - Phosphorus: usually P-3 Can change

Radium

Ra+2

rubidium

Rb+1

Rhodium

Rh+3

Ruthenium

Ru+3

Scandium

Sc+3

Stannic

Sn+4 Tin (IV)

Strontium

Sr+2

Rest of group 16

Sulfur (S-2) Selenium (Se-2) Tellurium (-2) Polonium (+2) Usually but can change

Tantalum

Ta+5

Zinc

Zn+2 Group 12

Zirconium

Zr+4

Naming (nonmetal + nonmetal)

Use prefixes "ide" on 2nd nonmetal

Tungsten

W +6