Which of the following statements is true about the bonding in graphite?
The carbon atoms in each layer are covalently bonded to each other.
The carbon atoms in each layer are ionically bonded to each other.
The carbon atoms in each layer are bonded to each other by hydrogen bonds.
The carbon atoms in each layer are bonded to each other by van der Waals forces.
The carbon atoms in each layer of graphite are covalently bonded to each other, but the layers themselves are held together by weak van der Waals forces, which allows them to slide past each other easily.