Bonding

Question 1

What is a metallic bond?

Answer 1

The attraction between positive ions and delocalised electrons.

Question 2

What is the structure of metals?

Answer 2

• The positive metal ions are packed close together in layers in a regular way.
• This three dimensional arrangement is called a giant metallic lattice.
• The metal ions are surrounded by delocalised electrons which move freely within the structure.
• Delocalised means not tied to a particular atom.
• Giant means endlessly repeating.

Question 3

What is an ionic bond?

Answer 3

The electrostatic attraction between oppositely charged ions.

Question 4

Describe ionic bonding.

Answer 4

• Ionic bonding occurs between metals and non-metals.
• Electrons are transferred from a metal to a non-metal.
• Positive and negative ions are formed.
• Metal atoms lose electrons and become positively charged.
• Non-metals gain electrons and become negatively charged.

Question 5

What are the charges of compound ions?

Answer 5

+1:
- ammonium

-1:
- hydroxide
- nitrate (III)
- nitrate (V)
- cyanide
- hydrogen carbonate
- hydrogen sulfate

-2:
- carbonate
- sulfate (IV)
- sulfate (VI)
- hydrogen phosphate

-3:
- phosphate

Question 6

What is a covalent bond?

Answer 6

A shared pair of electrons.

Question 7

What is a coordinate bond?

Answer 7

A covalent bond in which both electrons of the shared pair come from the same atom.