ARSENIC

ARSENIC

• Atomic Number:12
• Atomic Weight:24.305amu
• Symbole: As
• Group Number: 15
• Group Name: Pnictogen

CLASSIFICATION:SEMI-METAL

• Period Number: 4
• Block: P-block
• A highly poisonous solid element
• Standard state: Solid
• Color: Yellow, and grey or metalic

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• Density:5.73
• Melting/Freezing point:1090k
• Boiling point:876k

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• ARSENIC AND ITS COMPOUNDS ARE POISONOUS.
• Upon heating Arsenic goes from a solid straight to gas.
• Arsenic was discovered by Known since ancient times at no data in not known. From the Greek word "arsenikon" meaning "yellow orpiment".
• Mined by the early Chinese, Greek and Egyptian civilisations. No doubt they discovered its toxic properties early on.

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• Biological role:
• despite its poisonous reputation, may be a necessary element for humans.
• It is a necessary ultratrace element for red algae, chickens, rats, goats, and pigs.
• Fun Fact:
• Arsenic was known for many centuries as the 'King of Poisons'.

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