Identify the incorrect statement from the following.
(1) In an atom, all the five 3d orbitals are equal in energy in free state.
(2) The shape of dxy, dyz and dzx orbitals are similar to each other; and dx2_ y2 and dz2 are similar to each other.
(3) All the five 5d orbitals are different in size when compared to the respective 4d orbitals.
(4) All the five 4d orbitals have shapes similar to the respective 3d orbitals.