Naming Ionic Compounds



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OBJECTIVES

INFORMATION

IONIC NAMING

CHARACTERISTICS

QUIZ



Identifying an ionic compound and naming ionic compounds was mastered during the sophomore year of chemistry, but for review the rules for naming are listed below.

RULES FOR NAMING IONIC COMPOUNDS

    1.The metal name is unchanged.

    2.The non-metal name is changed to an ide ending.

    3.The polyatomic ion name is unchanged. (already an ion)

    4.The transitions metals require a Roman Numerial to communicate their charge.



RULES FOR PREDICTING COMMON CHARGES FOR MONOATOMIC IONS

The only elements that can have their charge predicted easily are the representative elements.

These the "A" Group elements.

When looking at the periodic table the elements in groups
IA, IIA, and IIIA will be most stable by losing e-.

All of the valence electrons are removed, leaving these elements with a filled inner energy level.

These elements become postivively charged ions, known as cations.



Whereas the elements in groups VA, VIA, and VIIA will be most stable by gaining e-.

Valence electrons are added, leaving these elements with a filled energy level.

These elements become negatively charged ions, known as anions.


Elements in group IVA can lose four electrons (e-) or gain four e-, they most commonly lose four e- (examples include Tin [Sn] and lead [Pb].

Elements in group VIIIA (Zero Group) are known as the Nobel Gases, these are also called the inert gases in some literature. These elementsalready have a filled valence energy level and are stable. These elements do not react, which explains the name inert (unreactive).



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