Bonding continuum

Question 1

What is one of the main things that control the type of bond a compound makes

Answer 1

The difference in electronegativity

Question 2

Ionic bonds are formed by …… differences in electronegativity

Answer 2

Large

Also have a high ionic character

Question 3

Polar covalent bonds are formed by ….. differences in electronegativity

Answer 3

Low

Also have high covalent character

Question 4

Pure covalent bonds are formed by ….. differences in electronegativity

Answer 4

No

Question 5

Pure covalent bonding

Answer 5

In diatomic elements there is no difference in electronegativity so there is an equal force of attraction on the shared electrons for example F2

Question 6

Polar covalent bonding

Answer 6

Similar to pure covalent except there is a different electronegativity so an uneven force on the shared pair of electrons.

Question 7

Drawing covalent bonding diagrams

Answer 7

Draw bond - both element symbols with line (or several) between.
Write each elements electronegativity underneath it.
Draw shared electrons across either side of the bond closer to the side with greater electronegativity
Write weird S- on side with greater electronegativity and weird S+ on side with lower electronegativity

Question 8

Ionic bonding

Answer 8

Atoms with large differences in electronegativity form ionic bonds.
Involves the transfer of one electron to another.
The atom with smaller electronegativity loses electron(s) and atom with greater electronegativity gains electron(s)

Question 9

Ionic character for each type of bond

Answer 9

0 = pure covalent 
0-0.4 = mostly covalent 
0.4-1.7= polar covalent 
1.8> = ionic
When talking about covalent bonds between atoms the type of covalent bond is a polar covalent bond.

Question 10

Can molecules with polar bonds be non-polar?

Answer 10

Yes like in the case of CO2 (O=C=O)

Question 11

What determines of a molecule is polar or not

Answer 11

It’s shape and the polarity of the bonds

Question 12

Shape of polar molecule must be

Answer 12

Asymetric - meaning it can have a slightly positive and slightly negative side shown by drawing a straight line between the positive and negative part