Naming Compounds

H+

hydrogen ion (same rule applies for all other ions with a + charge)

NH4+

ammonium ion

H-

hydride ion

F-

fluoride ion

Cl-

chloride ion

Br-

Bromide ion

I-

iodide ion

CN-

cyanide ion

OH-

hydroxide ion

O 2-

oxide ion

O2 2-

peroxide ion

S2-

sulfide ion

N3-

nitride ion

C2H3O2 -

acetate ion

CLO3 -

chlorate ion

ClO4 -

perchlorate ion

NO3 -

nitrate ion

MnO4 -

permanganate ion

CO3 2-

carbonate ion

CRO4 2-

chromate ion

Cr2O7 2-

dichromate ion

SO4 2-

sulfate ion

PO4 3-

phosphate ion

\-ide

cation/positive charge polyatomic ion

hypo…ite

oxyanion, two fewer oxygen

\-ite

oxyanion, one fewer oxygen

\-ate

oxyanion, one more oxygen

per…ate

oxyanion, two more oxygen

\-ide → hydro…ic acid

acid, ends in -ide

\-ite → -ous acid

acid, ends in -ite

\-ate → -ic acid

acid, ends in -ate

mono-

first element (left/lower on pt), 1

di-

first element (left/lower on pt), 2

tri-

first element (left/lower on pt), 3

tetra-

first element (left/lower on pt), 4

penta-

first element (left/lower on pt), 5

hexa-

first element (left/lower on pt), 6

hepta-

first element (left/lower on pt), 7

octa-

first element (left/lower on pt), 8

nona-

first element (left/lower on pt), 9

deca-

first element (left/lower on pt), 10

\-ide

second element (right/higher) \\