The complex [Co(NH3)6]3+ is called an octahedral complex because it exhibits an octahedral geometry. Here are the steps to understand why:

1. Start by identifying the central metal ion in the complex, which in this case is cobalt (Co).

2. Next, determine the coordination number of the metal ion, which refers to the number of ligands (NH3 molecules) attached to the metal ion. In this complex, there are six NH3 ligands coordinated to the cobalt ion.

3. Now, visualize the arrangement of the ligands around the central metal ion. In an octahedral complex, the ligands are arranged in a symmetrical manner around the metal ion, forming an octahedron shape.

4. An octahedron has six faces, and each face corresponds to one of the NH3 ligands. The ligands are positioned at the vertices of the octahedron, with three ligands in one plane and the other three ligands in a perpendicular plane.

5. The octahedral geometry is characterized by bond angles of approximately 90 degrees between adjacent ligands and bond angles of approximately 180 degrees between ligands in different planes.

6. Therefore, based on the arrangement of the six NH3 ligands around the cobalt ion, the complex [Co(NH3)6]3+ is classified as an octahedral complex.

In summary, the complex [Co(NH3)6]3+ is called an octahedral complex because it has a central cobalt ion coordinated to six NH3 ligands, arranged in an octahedral geometry.

Question

The complex [Co(NH3)6]3+ is called an octahedral complex because it exhibits an octahedral geometry. Here are the steps to understand why:

1. Start by identifying the central metal ion in the complex, which in this case is cobalt (Co).

2. Next, determine the coordination number of the metal ion, which refers to the number of ligands (NH3 molecules) attached to the metal ion. In this complex, there are six NH3 ligands coordinated to the cobalt ion.

3. Now, visualize the arrangement of the ligands around the central metal ion. In an octahedral complex, the ligands are arranged in a symmetrical manner around the metal ion, forming an octahedron shape.

4. An octahedron has six faces, and each face corresponds to one of the NH3 ligands. The ligands are positioned at the vertices of the octahedron, with three ligands in one plane and the other three ligands in a perpendicular plane.

5. The octahedral geometry is characterized by bond angles of approximately 90 degrees between adjacent ligands and bond angles of approximately 180 degrees between ligands in different planes.

6. Therefore, based on the arrangement of the six NH3 ligands around the cobalt ion, the complex [Co(NH3)6]3+ is classified as an octahedral complex.

In summary, the complex [Co(NH3)6]3+ is called an octahedral complex because it has a central cobalt ion coordinated to six NH3 ligands, arranged in an octahedral geometry.

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