Periodic Table Part 7: Chalcogens (O, S, Se, Te, Po, Lv)

The video tutorial covers Group 16 elements, known as chalcogens, including oxygen, sulfur, selenium, tellurium, polonium, and livermorium. It discusses their electron configurations, properties, and the tendency to complete their outer electron shells. The video also explains the natural occurrence and extraction methods of these elements, their various allotropes, and their industrial applications, such as oxygen in combustion and sulfur in sulfuric acid production. The tutorial highlights the rarity and synthetic nature of some elements like livermorium and the radioactive properties of polonium.

Which group in the periodic table is known as the chalcogens?

• Group 17

• Group 16

• Group 15

• Group 14

What is the primary method of obtaining selenium?

• Mining from volcanic deposits

• Extraction from seawater

• Recovery from electrolytic copper purification

• Synthesis in laboratories

Which of the following is a major allotrope of oxygen?

• H2O

• S8

• CO2

• Ozone

What is the most common form of sulfur found in nature?

• S8

• S6

• S4

• S2

Which element is used in the production of Xerox copies due to its narrow band gap?

• Tellurium

• Selenium

• Sulfur

• Oxygen

What is a common application of tellurium in technology?

• Ingredient in fertilizers

• Additive in plastics

• Component in solar cells

• Fuel for rockets

Which element is known for its use in anti-static devices despite its toxicity?

• Oxygen

• Sulfur

• Polonium

• Livermorium