(TG): BONDING & ELECTRONEGATIVITY

BONDING AND ELECTRONEGATIVITY 

Types of Bonds:

• There are 3 types of bonds: Ionic, covalent, metallic

Electronegativity: 

• Electronegativity is how much an atoms wants to join electrons
• Fluorine = 4.0
• Chlorine = 3.0
• Cesium = 0.8
• Atoms with greater en. attract electrons more
• Polar covalent bonds form an unequal sharing of electrons
• Non polar covalent bonds form from equal sharing
• The type of bond formed can be predicted by looking at the difference in en. of the elements
• En is greater than 1.7 = ionic 
• En is less than 1.7 = polar covalent  bond
• En = 0? Non polar covalent bond

EXAMPLES!:

Determine the difference in electronegativity between the following elements: (use your en. chart)

Helium - Lithium = 1.22

Potassium - Sulphur = 1.76

Strontium - Iodine = 1.71

Cobalt - Bromine = 1.08 

Identify the positive and negative sides of the polar bonds. 

 

P - Cu

 

Negative Side - P - Cu - Positive Side

Si - Cr

Negative Side - Si - Cr - Positive Side

 

THESE ARE ALL 100% ORIGINALLY MADE QUESTIONS BROUGHT TO YOU BY: THE ONE AND ONLY TG.