How many atoms are needed to build Octahedra shape? 7 4 6 5

To determine the number of atoms needed to build an octahedral shape, we need to consider the structure of an octahedron.An octahedron is a polyhedron with 8 faces, each of which is an equilateral triangle. To construct an octahedron, we need to arrange the atoms in a way that each atom is connected to 4 other atoms, forming a tetrahedral arrangement.In an octahedron, there are 6 vertices, each of which is shared by 4 faces. Therefore, the number of atoms needed to build an octahedral shape is 6.So, the correct answer is 6.