CHAPTER 6 NOBLE GASES.

CHAPTER-6


Group 18 Noble Gases Contains: Nonmetals Valence Electrons: 8 (2 for He) Reactivity: Unreactive (least reactive  group)...





USES OF NOBLE GASES :

HELIUM

Used in balloons and airships. It is much less dense than air, so balloons filled with it float upwards.

NEON




Used in advertising signs, it glows when electricity is passed through it. Different coloured neon 
lights can be made by coating the inside of the glass tubing of the lights with other chemicals.

ARGON

















KRYPTON





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