Molecular geometry is the shape of the molecule based on how the atoms are arranged. The shape of the molecule affects many different things including its color, how well it can magnetize thing, how it reacts, its polarity and the activity involving biology. Molecules do bond and this bonding has to do with its shape. The shape of the molecules is tetrahedral.
A tetrahedron is shaped like a pyramid. It has four sides and is three-dimensional. It could also be called a triangular pyramid. However, tetrahedrons can include six edges and four vertexes which means that it has four points or corners. If you have a piece of paper, then you can make a tetrahedron. So, a molecule is shaped like a triangular pyramid.
ClO4 is a molecule bound by covalent bonds. This is because both atoms in the molecule are non-metals. As a result, they will be sharing there electrons among them. To balance their outer shells, chlorine attaches with 4 oxygen atoms, sharing all the one pairs to achieve stability. It its attempt to stabilize its structure, it ends up making a tetrahedral structural arrangement.
This arrangement consists of the 4 oxygen molecules surrounding the chlorine atoms. However, the compound is unstable and can be easily degraded due to low bond energies. Usually, it is an anion and is attached to a metal to form a salt.