The video tutorial explores germanium, a metalloid on the periodic table, detailing its properties, discovery, and applications. Germanium is used in semiconductors and electronics, often alloyed with other elements. It plays a significant role in optics and infrared technology due to its unique properties. While germanium is not essential for life, some compounds can be hazardous. The video also covers germanium's minimal environmental impact.

What is the atomic number of germanium?

• 28

• 34

• 32

• 30

Which mineral was germanium isolated from?

• Galena

• Argyrodite

• Quartz

• Bauxite

In which field is germanium commonly used due to its semiconductor properties?

• Textiles

• Electronics

• Construction

• Agriculture

What makes germanium dioxide useful in optical devices?

• Magnetic properties

• High thermal conductivity

• High electrical resistance

• High refractive index and low optical dispersion

What is a potential health risk associated with germanium compounds?

• They can cause skin irritation

• They are radioactive

• They are highly flammable

• They can cause allergic reactions