Iron melts only at a very high temperature. Which statement accounts for the high melting point of iron?
- AEach iron cation has a strong electrostatic attraction to a sea of delocalised electrons.
- BIn every iron atom there is a strong attraction between the protons and the electrons.
- CIron has the same structure as diamond which has a very high melting point.
- DIron is an alloy and alloys have different physical properties from the elements they contain.