monoatomic ions, ionic and covalent compounds

group 1

+1 charge

H, Li, Na, K

element name and add “ion”

group 2

+2 charge

Be, Mg, Ca, Sr, Ba

element name and add “ion”

group 15

-3 charge

N (nitride) P (phosphide) As (arsenide)

group 16

-2 charge

O (oxide) S (sulfide) Se (selenide)

group 17

-1 charge

F (fluoride) Cl (chloride) Br (bromide) I (iodide)

cations

keep element name and add the word “ion.” for transition metals, use roman numerals

anions

elements ending is dropped and “ide” is added

Fe²+

iron (II) ion

latin name: ferrous ion

Fe³+

iron (III) ion

latin name: ferric ion

Cu^+

copper (I) ion

latin name: cuprous ion

Cu²+

copper (II) ion

latin name: cupric ion

Sn²+

tin (II) ion

stannous ion

Sn^4+

tin (IV) ion

latin name: stannic ion

Sc³+

scandium (III) ion

Ti^4+

titanium (IV) ion

Vanadium^5+

vanadium (V) ion

Cr³+

chromium (III) ion

W^6+

tungsten (VI) ion

Mn²+

manganese (II) ion

Tc^4+

technetium (IV) ion

Co²+

cobalt (II) ion

Ni²+

nickel (II) ion

Ag^+

silver ion

Au³+

gold (III) ion

Zn²+

zinc (II) ion

Cd²+

cadmium (II) ion

Hg²+

mercury (II) ion

Al³+

aluminum ion

Ga³+

gallium (III) ion

C^4-

carbide ion

Si^4-

silicide ion

Pb²+

lead (II) ion

ionic compounds

made only from metals,

covalent compounds

made from nonmetals, use prefix to indicate quantity