Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
List the elements of the periodic table in the order of increasing atomic number.

### Response:
Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon, potassium, calcium.