A)PHYSICAL PROPERTIES-

• Germanium
• Ge
• Solid

HISTORY

• Discovered by Clemens Winkler
• Discovered in 1886
• Discovered in mineral argyrodite

USES

• germanium is used to make transistors for use in electronic devices Germanium is also used to create alloys and as a phosphor in fluorescent lamps

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PHYSICAL PROPERTIES

• Niobium
• Nb
• Solid

HISTORY

• Charles Hatchett
• 1801
• Founded in an American ore

USES

• Niobium is used with iron and other elements in stainless steel alloys often used in pipeline construction

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PHYSICAL PROPERTIES

• Mercury
• Hg
• Liquid

HISTORY

• No single person discovered it
• No one knows when it was discovered
• No one knows where it was discovered

USES

• Mercury is used in laboratories for making thermometers barometers diffusion pumps and many other instruments

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