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Option 2 : Mercury
The correct answer is Option 2 i.e. Mercury
- Alloy obtained after mixing mercury with another metal is called Amalgam.
- All metals but Iron, Platinum, Tungsten and Tantalum form Amalgam with mercury.
- Siver and gold amalgams are used to fill tooth cavities in dentistry.
- Metallic bonds (arising out of electrostatic forces) hold the metals together in amalgam.
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Mercury:
- Mercury is a transition metal present in period 6 and group 12 of the periodic table with 80 as the atomic number.
- Mercury is the only metal, which is liquid at room temperature.
- When placed in a tube meniscus of mercury is convex, opposite to concave meniscus of water.
- It is used in clinical thermometers because of the property of its proportional expansion with increasing temperature.
- Elemental mercury is toxic to living beings and Minamata disease is associated with its consumption.
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