hydrogen

H2

Nitrogen

N2

Oxygen

O2

Fluorine

F2

Chlorine

Cl2

Bromine

Br2

giga (G)

10^9

mega (M)

10^6

kilo (k)

10^3

deci (d)

10^-1

centi (c)

10^-2

milli (m)

10^-3

micro (u)

10^-6

nano (n)

10^-9

nitrate

NO₃ ^-

nitrite

NO₂ ^-

phosphate

PO₄ ^3-

hydrogen phosphate

(HPO₄)^2-

hydroxide

OH^-

Sulfate

SO₄ ^2-

Sulfite

SO₃ ^2-

cyanide

CN^-

carbonate

CO₃ ^2-

permangante

MnO^4-

Perchloride

ClO^-4

chlorate

ClO₃ ^-

Chlorite

ClO₂ ^-

hypochlorite

ClO^-