Ch 6 Section 3 Flashcards
A familiar example of an ionically bonded compound is
Sodium chloride
A sodium atom, NA+ has a charge of
1+
A chloride ion, Cl- has a charge of
1-
There is an electrical force of attraction between
Oppositely charged ions
In sodium chloride the oppositely charged ions combine in a one to one ratio so that each positive charge is
Balanced by a negative charge
An ionic compound is composed of positive and negative ions that are
Combined so that the numbers of positive and negative charges are equal
Most ionic compounds exist as
Crystalline solids
A crystal of any ionic compound is a 3-dimensional network of
Positive and negative ions mutually attracted to one another
In contrast to a molecular compound an ionic compound is not composed of
Independent neutral units that can be isolated and examine s
The chemical formula of an ionic compound merely represents the
Simplest ratio is the compounds combined ions that gives electrical neutrality
The chemical formula of an ionic compound shows the ratio of the i
Ions present in a sample of any size
A formula unit is the simplest collection of atoms from which an
Ionic compounds formula can be established
In the naming of a monatomic anion the ending of the elements name is replaced with
-ide
Most of the rocks and minerals that make up earths crust consist of
Positive and negative ions held together by ionic bonding
The ratio of ions in a formula unit depends on the
Charles of the ions combined
Electron for notation can be used to demonstrate the
Changes that take place in ionic bonding
Ionic compounds do not ordinarily form by the
Combination of isolated atoms
Atoms it sodium and other alkali metals readily lose one electron to
Form cations
Atoms of chlorine and other halogens readily gain one electron to
Form anions
The combination of sodium and chlorine atoms to produce one formula unit of sodium chloride can be represented as follows
Sodium atom + chlorine atom –> sodium cation + chlorine anion
(Refer to txtbk for electron dot notation)
The transfer of an electron from the sodium atom to the chlorine atom transforms each atom into an ion with a
Noble gas configuration