Explain why the element nickel has a high melting point
Nickel is a metal and therefore it contains positive ions, called protons, which are surrounded by a sea of delocalised electrons, which are negative ions. There is a strong force of attraction between these positive and negative ions, and this requires a large amount of energy to break. This means that a large amount of heat energy needs to be applied to break the bonds, resulting in a high melting point.
JD
Related Chemistry A Level answers
All answers ▸Explain why the reactivity of Group 2 elements increases down the group.
Describe and explain the trend of reactivity of group 2 metals with water
Write an expression and units for equilibrium constant for this reaction: 2SO2(g)+O2(g)<-->2SO3(g)
How does the oxidising power of the group 1 metals vary?