Final answer:
The noble gases, including neon and argon, are chemically unreactive and stable due to their filled valence shells. Unlike sodium and mercury, neon and argon have fewer safety guidelines because of their unreactivity. Neon and argon are used in lighting applications due to their ability to produce vibrant colors.
Step-by-step explanation:
The elements within the group of the periodic table that contains neon and argon gas are known as the noble gases or the inert gases. The noble gases include helium, neon, argon, krypton, xenon, and radon. These gases are characterized by their filled valence shells, which make them unreactive and stable.
Unlike elements like sodium and mercury, the noble gases have full outer electron shells, making them chemically unreactive. This is why there are fewer safety guidelines regarding the handling of neon and argon compared to mercury and sodium. Neon and argon are often used in lighting applications, such as neon lights and fluorescent lamps, due to their ability to produce vibrant colors when sufficient voltage is applied to excite their electrons.
Neon is famous for its bright red-orange glow, while argon emits a bluish light when excited. These properties make them ideal for creating eye-catching signs and lighting. Mercury and sodium, on the other hand, are highly reactive and can pose significant safety hazards if mishandled or improperly disposed of.
Learn more about Noble gases