Introduction to Germanium: Properties and Applications

The video tutorial explores germanium, a metalloid in the periodic table, detailing its properties, discovery, and uses. Germanium, symbolized as Ge with atomic number 32, resembles silicon and is used in semiconductors and electronics. Discovered by Clemens Winkler, it was named after Germany. Germanium's optical properties make it valuable for lenses and fiber optics. While not essential to life, some germanium compounds can be hazardous. Its applications span from electronics to military technology, highlighting its versatility and importance.

What is the atomic number of germanium?

• 30

• 31

• 32

• 33

Which of the following is a common use of germanium in electronics?

• As a conductor in power lines

• As a coolant in nuclear reactors

• As a catalyst in chemical reactions

• As a semiconductor in transistors

What property of germanium dioxide makes it useful for optical lenses?

• Low melting point

• High thermal conductivity

• High electrical resistance

• High refractive index

Why is germanium considered to have little impact on health and the environment?

• It is non-reactive with other elements

• It is abundant in nature

• It is biodegradable

• It occurs only in trace amounts and is rarely ingested

Which germanium compound can irritate the eyes, skin, throat, and lungs?

• Germanium oxide

• Germanium chloride

• Germanium nitride

• Germanium sulfide