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Symbol- Hg
Atomic number- 80
Use- In thermometers, barometers etc.
State- Metallic Liquid

Mad as a Hatter! It's believed, is that hatters really did go mad. The chemicals used in hat-making included mercurous nitrate, used in curing felt and prolonged exposure to the mercury vapors caused mercury poisoning.

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Element Symbol: Ca

Atomic Number: 20

Standard Atomic Weight: 40.078

Electron configuration: [Ar] 4s²

Melting point: 842 °C

Discovered By: Sir Humphry Davy

Classification: Alkaline Earth Metal

State of Matter: Solid Metal

Pure calcium metal reacts vigorously and sometimes violently with water and acids. The reaction is exothermic. Touching calcium metal can cause irritation or even chemical burns. Swallowing calcium metal can be fatal

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Symbol- AU
Atomic number: 79
Use: jewellery
state: solid

Gold Discovered in California
James W. Marshall on January 24, 1848
Gold gets its English name from the Germanic word gulþa (meaning gold)