Periodic Table Part 2: Alkali Metals (Li, Na, K, Rb, Cs, Fr)

The video tutorial covers the alkali metals, detailing their group numbering, properties, natural sources, preparation, reactivity, and applications. It explains the two methods of numbering groups in the periodic table, focusing on the newer method. The tutorial highlights the common properties of alkali metals, such as their electron configurations and ionization energies. It discusses the natural sources of these metals and their rarity, especially francium. The video also covers the preparation methods and reactivity of alkali metals, including their reactions with water and alcohols. Finally, it explores various applications, such as lithium in batteries and sodium in lamps.

What is the electron configuration pattern common to all alkali metals?

• NS2

• NS1

• NP1

• NP2

Which alkali metal is primarily found in the ore pollucite?

• Rubidium

• Lithium

• Sodium

• Cesium

How do the melting points of alkali metals change as you move down the group?

• They fluctuate randomly

• They decrease

• They increase

• They remain constant

Which alkali metal reacts uniquely with nitrogen gas to form a ruby red solid?

• Lithium

• Cesium

• Potassium

• Sodium

What is a common use of lithium in the automotive industry?

• Lubrication

• Fuel

• Paint

• Coolant

Which alkali metal is known for its use in highly accurate atomic clocks?

• Rubidium

• Sodium

• Francium

• Potassium

What is the primary reason francium has no practical applications?

• It is too expensive

• It is highly radioactive

• It is too abundant

• It is non-reactive