Question

binary ionic compounds
goal: to name and write formulas for binary ionic compounds.
names can be understood each others notes because rules for naming are the same around the world.
steps example

1. write the name of the metal, the positive ion. sodium and chlorine
2. write the name of the non - metal, the negative ion, changing the ending to - ide. sodium
3. write the name of the compound. begin with the positive ion. chloride

writing formulas for binary ionic compounds
binary ionic compounds are always composed of a metal ion and a non - metal ion. follow these steps to write the formula for each set of elements. an example is done for you.
steps example

1. identify each ion and its charge. sodium and chlorine
2. determine the total positive charge and the total negative charge needed to equal zero. na+ and cl−

(1+) + (1−) = 0

1. note the ratio of positive ions to negative ions.
2. write the formula, beginning with the metal ion. use subscripts to show the ratio of ions. (a subscript of 1 is not written.) 1:1

nacl
practice

1. name each compound.

a. lif
b. beo
c. na3n
d. mgcl2

Explanation:

Step1: Identify naming rules

For binary ionic compounds, name the metal first and then the non - metal with its ending changed to - ide.

Step2: Name LiF

Lithium is the metal and fluorine is the non - metal. So the name is lithium fluoride.

Step3: Name BeO

Beryllium is the metal and oxygen is the non - metal. So the name is beryllium oxide.

Step4: Name Na₃N

Sodium is the metal and nitrogen is the non - metal. So the name is sodium nitride.

Step5: Name MgCl₂

Magnesium is the metal and chlorine is the non - metal. So the name is magnesium chloride.

Answer:

a. lithium fluoride
b. beryllium oxide
c. sodium nitride
d. magnesium chloride