Group VII-B and Noble Gases

• Manganese is a co-factor in...

  • Phosphorylation
  • Fatty Acid and Cholesterol Synthesis
  • Protein Synthesis
• Manganism


  Causes permanent neurological disease
• Manganese ion gives a purple solution with sodium bismuthate.
• Potassium permanganate 


  Mineral chameleon
• Use of Potassium Permanganate

  Oxidizing agent and Antiseptic
• Use of Manganese dioxide


  Masks the blue-green color of the glass
• Etymology of Technetium

  • Greek word: Technetos
  • Meaning: Artificial
• Technetium

  • Used in preparation of radiopharmaceuticals
  • 1 st element produced artificially
• Etymology of Helium

  • Greek word: Helios
  • Meaning: Sun (which is made up of H and He)
• Helium

  2nd lightest gas
• Toxicity of Helium

  Donald-duck like sound
• Uses of Helium

  • Carrier/diluents of medically important gases
  • Component of artificial gas
• Container used for Helium 


  Brown
• Container used for Oxygen


  Green
• Container used for Nitrogen

  Black
• Container used for Nitrous Oxygen

  Blue
• Container used for Carbon dioxide

  Gray
• Neon

  For advertising
• Etymology of Argon

  Lazy/Inactive
• Argon

  Most abundant noble gas
• Use of Argon

  Substitute of Nitrogen in providing inert atmosphere
• Process of Argon

  By-product of fractionalization of liquid air
• Etymology of Krypton

  Meaning: Hidden
• Krypton

  Have inhalation anesthetic activity
• Ramsay and Travers isolated Krypton in liquid residues from argon
• Etymology of Xenon

  Meaning: Stranger
• Xenon

  • It has inhalation anesthetic activity
  • Least abundant of all noble gas
• Radon

  • AKA: Niton
  • Synthetic Noble gas
  • Recovered from the radioactive decay of Radium
  • Causes Lung cancer
  • Used for treatment of Carvical cancer