Question

What are noble gases? What makes them so unique?

Answer 1

The noble gases, also known as the inert gases, are the elements that belong to group 18 of the modern periodic table. The elements that belong to this group are:

• Helium (He)
• Neon (Ne)
• Argon (Ar)
• Krypton (Kr)
• Xenon (Xe)
• Radon (Rn)

Uniqueness of noble gases:

• They are in gaseous state at room temperature.
• They are the least reactive elements.
• They generally do not combine with other atoms.
• They have fully filled outer shells either with 2 electrons (He) or 8 electrons (such as Ne, Ar).