Group 13 Elements and Their Properties

The video lecture introduces the chemistry of the boron family, focusing on Group 13 elements. It covers their electronic configurations, properties, and the transition from non-metallic to metallic characteristics. The lecture highlights the covalent nature of boron and the ionic tendencies of other elements in the group. It also discusses the stability of oxidation states and the unique properties of elements like gallium. The video concludes with a call to action to subscribe for more content.

What is the main focus of the lecture?

• The chemistry of lanthanides

• The chemistry of transition metals

• The chemistry of noble gases

• The chemistry of main group elements, specifically the boron family

Which element in group 13 has the electronic configuration 3d10 4s2 4p1?

• Aluminum

• Boron

• Indium

• Gallium

What is unique about boron compared to other group 13 elements?

• It is a noble gas

• It is a metalloid

• It is a non-metal

• It is a metal

Which element is the third most abundant in the Earth's crust?

• Thallium

• Aluminum

• Gallium

• Boron

What is the stable oxidation state shown by all group 13 elements?

• +2

• +1

• +4

• +3

What is the general trend in metallic character down group 13?

• No change

• From non-metallic to metallic

• From metallic to non-metallic

• From ionic to covalent

Which group 13 element has a low melting point due to its unusual structure?

• Boron

• Gallium

• Aluminum

• Thallium

What type of structure does boron have?

• Covalent network

• Ionic

• Metallic

• Amorphous

What happens to the ions of group 13 elements in a solution?

• They exist in hydrated states

• They form covalent bonds

• They remain unchanged

• They decompose

Which compounds of aluminum and gallium are covalent when anhydrous?

• AlCl3 and GaCl3

• AlF3 and GaF3

• Al2O3 and Ga2O3

• AlBr3 and GaBr3