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Zorluk: KolayNoble Gases: Isolation, Electronic Structure, and Uses

Which of the following noble gases is extracted from air by fractional distillation and extensively used to provide an inert atmosphere during electric arc welding?

  1. ArgonCevap
  2. B
    Helium
  3. C
    Neon
  4. D
    Krypton

Cevap

Argon is the noble gas obtained from liquid air by fractional distillation and used to create an inert atmosphere in electric arc welding.
Argon makes up roughly 0.93% of atmospheric air by volume and is isolated as a major byproduct during the fractional distillation of liquid air. Due to its completely filled valence electron shell, it is extremely unreactive, making it ideal for creating an inert atmosphere that protects molten metal from reacting with oxygen or nitrogen during electric arc welding.

Adım Adım Çözüm

1
Identify the primary atmospheric noble gas isolated by fractional distillation.
Argon makes up about 0.93% of atmospheric air by volume and is commercially extracted during the fractional distillation of liquid air.
Air separation units liquefy air and separate its constituents based on boiling point differences.
2
Relate the chemical properties of Argon to its industrial application.
Because Argon is chemically inert, it acts as a protective shield during high-temperature arc welding to prevent hot metals from reacting with atmospheric oxygen and nitrogen.
A noble gas atmosphere prevents oxidation and corrosion of the weld joint.

Anahtar Kavram

Isolation and uses of noble gases
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Noble Gases: Isolation, Electronic Structure, and Uses

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