Element .0. Nomenclature Rules : Individual Element Name the element exactly as it is written on the Periodic Table Compound biatomics There are seven elements that never exist by themselves, but always in pairs. Binary Two different elements bonded together. *.H2F2BraI2E Polyatomic A group of atoms that act as a unit. Consist of two or more different non-metals joined by a covalent bond. A/ways write the chemical formula in lowest terms Write the cation (metal) first, using the name from the Periodic Table. If it is a multivalent cation (highlighted) make sure to include roman numerals to identify how the cation is bonding. Or use the latin name with an ous” (lower) or “ic” (higher) ending. Write theanion (non- metal) second, dropping the usual ending and replace it with “ide”. Ionic A metal and a non metal bonded together to form a crystal lattice structure. Always write the chemical formula in lowest terms Covalent Two non-metals bonded together to form a molecule. bO NOT reduce chemical formula to lowest terms Write the name of the cation (metal) first using the name from the Periodic Table. If it is a multivalent cation (highlighted) make sure to include roman numerals to identify how the cation is bonding. . Or use the latin name with an “ous” (lower) or “ic” (higher) ending. Write the name of the polyatomic ion with the”ate” Attach a prefix that indicates the number of atoms in the chemical formula in from of the name of each element. The name of the second element ends in “ide”.
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Ele
men
t
.0
.
Nom
encl
atur
eR
ules
:
Indi
vidu
alE
lem
ent
Nam
eth
eel
emen
tex
actl
yas
itis
wri
tten
onth
ePe
riod
icT
able
Com
poun
d
biat
omic
sT
here
are
seve
nel
emen
tsth
atne
ver
exis
tby
them
selv
es,
but
alw
ays
inpa
irs.
Bin
ary
Two
diff
eren
tel
emen
tsbo
nded
toge
ther
.
*.H
2F
2B
raI2E
Poly
atom
icA
grou
pof
atom
sth
atac
tas
aun
it.C
onsi
stof
two
orm
ore
diff
eren
tno
n-m
etal
sjo
ined
bya
cova
lent
bond
.
A/w
ays
wri
teth
ech
emic
alfo
rmul
ain
low
est
term
sW
rite
the
catio
n(m
etal
)fi
rst,
usin
gth
ena
me
from
the
Peri
odic
Tab
le.
Ifit
isa
mul
tival
ent
catio
n(h
ighl
ight
ed)
mak
esu
reto
incl
ude
rom
annu
mer
als
toid
enti
fyho
wth
eca
tion
isbo
ndin
g.O
rus
eth
ela
tinna
me
with
anou
s”(l
ower
)or
“ic”
(hig
her)
endi
ng.
Wri
teth
eani
on(n
on-
met
al)
seco
nd, d
ropp
ing
the
usua
len
ding
and
repl
ace
itw
ith“i
de”.
Ioni
cA
met
alan
da
non
met
albo
nded
toge
ther
tofo
rma
crys
tal
latt
ice
stru
ctur
e.
Alw
ays
wri
teth
ech
emic
alfo
rmul
ain
low
est
term
s
Cov
alen
tTw
ono
n-m
etal
sbo
nded
toge
ther
tofo
rma
mol
ecul
e.
bON
OT
redu
cech
emic
alfo
rmul
ato
low
est
term
s
Wri
teth
ena
me
ofth
eca
tion
(met
al)
firs
tus
ing
the
nam
efr
omth
ePe
riod
icT
able
.
Ifit
isa
mul
tival
ent
catio
n(h
ighl
ight
ed)
mak
esu
reto
incl
ude
rom
annu
mer
als
toid
enti
fyho
wth
eca
tion
isbo
ndin
g..O
rus
eth
ela
tinna
me
with
an“o
us”
(low
er)
or“i
c”(h
ighe
r)en
ding
.
Wri
teth
ena
me
ofth
epo
lyat
omic
ion
with
the”
ate”
Att
ach
apr
efix
that
indi
cate
sth
enu
mbe
rof
atom
sin
the
chem
ical
form
ula
infr
omof
the
nam
eof
each
elem
ent.
The
nam
eof
the
seco
ndel
emen
ten
dsin
“ide
”.
Review— Naming Chemical CompoundsThe following are a good mix of naming and formula writing problems to help youget some practice. I will expect that you know how to name both ionic andcovalent compounds in your work.
Name the following chemical compounds:
1) NaBr
_____________________
2) Ca(C2H302)2
3) P205
__________________________
4) Ti(S04)2
5) FePO4
______________________
6) K3N
___
7) SO2
8) CuOH
9) Zn(N02)2
10) V2S3
Write the formulas for the following chemical compounds: