UNIT 4UNIT 4

REVIEW REVIEW

ElementsElements

If the formula has ONE CAPITAL If the formula has ONE CAPITAL LETTER, it is an element, and its name is LETTER, it is an element, and its name is what is found on the periodic table what is found on the periodic table (regardless of subscript)(regardless of subscript)

IONSIONS

Positive ions are named for the elementPositive ions are named for the element Na+ is the ‘sodium ion’Na+ is the ‘sodium ion’

Negative ions end in ‘-ide’Negative ions end in ‘-ide’ Cl- is the “chloride ion”Cl- is the “chloride ion”

Check table E for polyatomic ions (like Check table E for polyatomic ions (like NONO33

--))

all TWO element compounds all TWO element compounds (two capital letters) end in –(two capital letters) end in –IDE, whether molecular or IDE, whether molecular or ionicionic

NFNF33 nitrogen trifluor nitrogen trifluorideide

CaClCaCl22 calcium chlor calcium chlorideide

MOLECULAR COMPOUNDSMOLECULAR COMPOUNDS::

- start with a - start with a NON-METALNON-METAL

- use - use PREFIXESPREFIXES in the name in the name

PP22OO5 5

didiphosphorus phosphorus pentpentoxideoxide

IONIC COMPOUNDS:IONIC COMPOUNDS:

- start with a - start with a METALMETAL

- - NONO prefixes in name prefixes in name

- if given name write SYMBOL - if given name write SYMBOL and CHARGE above names to and CHARGE above names to find formulafind formula

KF potassium fluorideKF potassium fluoride

MgMg2+ 2+ PP3-3-

magnesium phosphidemagnesium phosphide

MgMg33PP22

If the metal can have more If the metal can have more than one charge, use than one charge, use ROMAN NUMERALS in the ROMAN NUMERALS in the name:name:

CuCu2+2+ Cl Cl--

copper (II) chloride copper (II) chloride CuClCuCl22

if non-metal is if non-metal is POLYATOMIC IONPOLYATOMIC ION, , compound ends in compound ends in –ITE–ITE or or –ATE–ATE::

KNOKNO33 potassium nitr potassium nitrateate

NaNa22SOSO4 4 sodium sulf sodium sulfateate

write formula and then name for:write formula and then name for:

NN22OO44

dinitrogen tetroxidedinitrogen tetroxide

SeFSeF22

selenium difluorideselenium difluoride

BB44CC

tetraboron tetraboron monocarbidemonocarbide

MgIMgI22

magnesium iodidemagnesium iodide

AgAg22SS

silver sulfidesilver sulfide

AlBrAlBr33

aluminum bromidealuminum bromide

sodium oxidesodium oxide

NaNa22OO

lithium phosphidelithium phosphide

LiLi33PP

O2

beryllium arsenideberyllium arsenide

oxygenoxygen

BeBe33AsAs22

iron(II) sulfideiron(II) sulfide

FeSFeS

chromium (III) chromium (III) fluoridefluoride

CrFCrF33

lead (IV) hydridelead (IV) hydride

PbHPbH44

NiNNiN

nickel (II) nitridenickel (II) nitride

MnOMnO22

manganese (IV) manganese (IV) oxideoxide

TiClTiCl33

titanium (III) chloridetitanium (III) chloride

LiNOLiNO33

LiNOLiNO33

Oxide ionOxide ion

OO2-2-

NHNH44FF

ammonium fluorideammonium fluoride

MgCOMgCO33

magnesium magnesium carbonatecarbonate

calcium chloratecalcium chlorate

calcium ioncalcium ion

CaCa2+2+

Ca(ClOCa(ClO33))22

lithium phosphatelithium phosphate

LiLi33POPO44

aluminum nitratealuminum nitrate

Al(NOAl(NO33))33

Pb(NOPb(NO33))22

lead(II) nitratelead(II) nitrate

nitrogen triiodidenitrogen triiodide

NINI33

sodium sulfidesodium sulfide

NaNa22SS

KK33POPO44

potassium phosphatepotassium phosphate

SrSOSrSO44

strontium sulfatestrontium sulfate

carbon tetrachloridecarbon tetrachloride

CClCCl44

barium hydroxidebarium hydroxide

Ba(OH)Ba(OH)22

BBrBBr33

boron tribromideboron tribromide

nickel (III) carbonatenickel (III) carbonate

NiNi22(CO(CO33))33

zinc oxidezinc oxide

ZnOZnO

RbHRbH

rubidium hydriderubidium hydride