There are very strong electrostatic forces of attraction in all directions in a giant ionic lattice.Why does this result in a very high melting point?A lot of energy is needed to overcome the electrostatic forces and separate the electrons from each other.A lot of energy is needed to overcome the electrostatic forces and hold the ions together.A lot of energy is needed to overcome the electrostatic forces and separate the atoms from each other.A lot of energy is needed to overcome the electrostatic forces and separate the ions from each other.

The reason why a giant ionic lattice has a very high melting point is because a lot of energy is needed to overcome the electrostatic forces and separate the ions from each other.

Here's the step by step explanation:

1. In a giant ionic lattice, ions are arranged in a three-dimensional structure. Each ion is surrounded by ions of the opposite charge, and these ions are held together by strong electrostatic forces of attraction.

2. When heat is applied to the lattice, energy is absorbed by the ions. This energy is used to overcome the electrostatic forces of attraction between the ions.

3. However, because these forces of attraction are very strong and exist in all directions within the lattice, a large amount of energy is required to overcome them.

4. Therefore, the temperature must be raised significantly (i.e., to a very high level) before the ions have enough energy to overcome these forces and move freely from each other. This is the point at which the lattice melts.

5. Hence, a giant ionic lattice has a very high melting point because a lot of energy is needed to overcome the electrostatic forces and separate the ions from each other.