Question

ds [10] CHEM 1405-Experiment 4: tonic and Covalent Compoun column of the table below, and highlight those cases where the net charge is zero. Charge on anion Ch arge on cation Number of cations INumber of anions Net charge when the specified number of ions come together + 2 + 3 An example of an ionic compound of this type is An example of an ionic compound of this type is: + 2 + 2 + 2 An example of an ionic compound of this type is: + 3 + 3 + 3 An example of an ionic compound of this type is: + 2 + 2 + 2 + 2 + 2 An example of an ionic compound of this type is: + 3 le of an ionic compound of this type is:

Answer 1

6.Net charge, NC = charge on cation x number of cation + charge on anion x number of anion

charge on cation	charge on anion	number of cation	number of anion	net charge
+1	-1	1	1	1x1-1x1=0
+2	-2	1	1	2x1-2x1=0
+3	-3	1	1	3x1-3x1=0

+1	-2	1	1	1x1-2x1 = -1
+1	-2	1	2	1x1-2x2 = -3
+1	-2	2	1	1x2-2x1 = 0

example : Sodium suphide (Na₂S )

+1	-3	1	1	1x1-3x1 = -2
+1	-3	1	2	1x1-3x2 = -5
+1	-3	1	3	1x1-3x3 = -8
+1	-3	2	1	1x2-3x1 = -1
+1	-3	3	1	1x3-3x1 = 0

example : Sodium nitride ( Na₃N)

+2	-1	1	1	2x1-1x1 = 1
+2	-1	1	2	2x1-1x2 = 0
+2	-1	2	1	2x2 -1x1= 3

example : Calcium chloride ( CaCl₂ )

+3	-1	1	1	3x1-1x1 = 2
+3	-1	1	2	3x1-1x2 = 1
+3	-1	1	3	3x1-1x3 = 0
+3	-1	2	1	3x2-1x1 = 5
+3	-1	3	1	3x3-1x1 = 8

example : Aluminium chloride ( AlCl₃ )

+2	-3	1	1	2x1-3x1 = -1
+2	-3	1	2	2x1-3x2 = -4
+2	-3	2	1	2x2-3x1 = 1
+2	-3	2	3	2x2 - 3x3 = -5
+2	-3	3	2	2x3-3x2 = 0

example : Ba₃N₂ ( Barium Nitride )

+3	-2	1	1	3x1-2x1= 1
+3	-2	1	2	3x1-2x2 = -1
+3	-2	2	1	3x2-2x1 = 4
+3	-2	2	3	3x2-2x3 = 0
+3	-2	3	2	3x3-2x2 = 5

example : Aluminium Sulphate ( Al₂(SO₄)₃ )