Group 13 Elements: The Boron Family
Chapter Name : The P- Block Elements |
Sub Topic Code : 102_11_11_02_01 |
Topic Name : Group 13 Elements: The Boron Family |
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Sub Topic Name : Electronic Configuration |
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Introduction
• Group 13 elements show a wide variation in properties. • Boron is a typical non-metal, aluminium is a metal but shows many chemical similarities to boron, and gallium, indium and thallium are almost exclusively metallic in character. • Aluminium is the most abundant metal and the third most abundant element in the earth’s crust (8.3% by mass) after oxygen (45.5%) and Si (27.7%). • Bauxite, Al2O3. 2H2O and Cryolite, Na3AlF6 are the important minerals of aluminium. • In India it is found as mica in Madhya Pradesh, Karnataka, Orissa and Jammu. • Gallium, indium and thallium are less abundant elements in nature. • The outer electronic configuration of these elements is ns2np1.
Pre-Requisites:
Elements, periodic table, Group
Activity:
• Group 13 has aluminium, boron which are important industrial elements.
Real Life Question:
What is aluminium used for?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| P block elements | Have the last electron in the outermost p orbital. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Periodic table | Look at Groups 13 in the periodic table. |
Real life uses :
• Aluminium is a metal used to make utensils, aircraft parts. Etc.
Places to visit :
Chemistry lab.
Practical examples around us
| Examples | Explainations |
|---|---|
| Aluminium | Aluminium belongs to the group 13 elements. |
What you learn in Theory:
• Group 13 elements show a wide variation in properties. • Boron is a typical non-metal; aluminium is a metal but shows many chemical similarities to boron, and gallium, indium and thallium are almost exclusively metallic in character. • Aluminium is the most abundant metal and the third most abundant element in the earth’s crust (8.3% by mass) after oxygen (45.5%) and Si (27.7%). • Bauxite, Al2O3. 2H2O and Cryolite, Na3AlF6 are the important minerals of aluminium. • In India it is found as mica in Madhya Pradesh, Karnataka, Orissa and Jammu. • Gallium, indium and thallium are less abundant elements in nature. • The outer electronic configuration of these elements is ns2np1.
What you learn in Practice:
• Group 13 has aluminium, boron which are important industrial elements.