Classify the following substances into Dia, Para and Ferro magnetic materials: (i) Manganese, (ii) Bismuth, (iii) Cobalt, (iv) Oxygen, (v) Copper and (vi) Aluminium.

Explanation

To classify the given substances into diamagnetic, paramagnetic, and ferromagnetic materials, we will analyze each substance based on their magnetic properties.

### Step-by-Step Solution:

1. **Understanding Magnetic Classification**:
- **Diamagnetic Materials**: These materials are weakly repelled by a magnetic field. They have no unpaired electrons.
- **Paramagnetic Materials**: These materials are weakly attracted by a magnetic field. They have some unpaired electrons.
- **Ferromagnetic Materials**: These materials are strongly attracted by a magnetic field and can retain their magnetic properties even after the external magnetic field is removed. They have many unpaired electrons.
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