Make a list of 3 chemical symbols for elements that are gases at room temperature
1. N (Nitrogen)
2. O (Oxygen)
3. H (Hydrogen)
Complete the following task based on the instruction and optional input provided.### Instruction:
Make a list of 3 chemical symbols for elements that are gases at room temperature

### Output:
1. N (Nitrogen)
2. O (Oxygen)
3. H (Hydrogen)