Name three elements in the periodic table.
Here are three elements in the periodic table: 

1. Hydrogen (H)
2. Oxygen (O)
3. Iron (Fe)
Complete the following task based on the instruction and optional input provided.### Instruction:
Name three elements in the periodic table.

### Output:
Here are three elements in the periodic table: 

1. Hydrogen (H)
2. Oxygen (O)
3. Iron (Fe)