Physical- Bonding

Question 1

What is the nature of bonding in ionic bonds?

Answer 1

Electrostatic attractions between positive and negative ions

Question 2

What is the nature of bonds in covalent bonds?

Answer 2

Shared pair of electrons between atoms

Question 3

What is the nature of bonds in metallic bonds?

Answer 3

Attraction between lattice of positive metal ions and delocalised outer shell electrons

Question 4

What are the strength of ionic bonding rules?

Answer 4

• The greater the charge on the ions the stronger the ionic bonding
• The smaller the ions, the stronger the ionic bonding

Question 5

What are the strength of covalent bonding rules?

Answer 5

Double bonds are stronger than single bonds but triple bonds are stronger than double bonds.

Question 6

What are the strength of metallic bonding rules?

Answer 6

• The smaller the ion, the greater the charge on the ions
• The more delocalised outer shell electrons there are, the stronger the metallic bonding

Question 7

What is a dative or co-ordinate bond?

Answer 7

When one atom provides the shared pair of electrons in a molecule

Question 8

What are the two conditions for a dative bond to be formed.

Answer 8

• Has to have a pair of lone electrons
• Another atom that is electron deficient (empty orbital to accept the lone pair of electrons)

Question 9

Describe the structure of diamond

Answer 9

3D tetrahedral shape, with each C atom bonded to 4 others

Question 10

What does malleable mean?

Answer 10

The layers within a structure can slide over each other

Question 11

How does the strength of metallic bonds change across the periodic table?

Answer 11

It increases - higher mp and bp
Higher charge on metal ions
More delocalised electrons per ion
Strong force of attraction between them