Group VII-B and Group VIII-A: NOBLE GASES

Manganese

Co factor in:

• Protein synthesis

• Phosphorylation

• Fatty acid and cholesterol synthesis

Technetium

Greek word: Technetos

Meaning: Artificial

• Used in perparation of radiopharmaceuticals

• 1st element produced artificially

Helium

Greek word: Helios

• Meaning: SUN

• 2ns lightest gas

Toxicity:

• Donald-duck like sound

Uses:

• Carrier/diluents of medically important gases

• Component of artificial gas

Stored in BROWN container.

Oxygen

Green container

Nitrogen

Black container

Nitrous oxide

Blue container

Carbon dioxide

Gray container

Neon

Used for advertising

Argon

Meaning: Lazy or inactive

• Most abundant noble gas

• Substitute of Nitrogen in providing inert

atmosphere

• By-product of fractionalization of liquid air

Krypton

Meaning: Hidden

• Have inhalation anesthetic activity

• Ramsay and Travis isolated Krypton in liquid residues from argon

Xenon

Meaning: Stranger

• 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 cervical cancer