What is argon used for in fieworks?

Answer 1

Argon is used to produce violet lights. Electrons in argon atoms use energy from the firework explosion to make the transition from the ground state to an excited state. Their return to the ground state results in the emission of violet light.

Answer 2

Argon is typically used in fireworks to create an inert environment inside the firework shell. This helps prevent oxidation and combustion of reactive materials inside the firework, allowing them to function properly when ignited.