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Group 13 Elements: The Boron Family
Chapter Name : The P- Block Elements
Sub Topic Code : 102_11_11_02_04
Topic Name : Group 13 Elements: The Boron Family
Sub Topic Name : Electronegativity
Introduction

• Down the group, electronegativity first decreases from B to Al and then increases marginally. • This is because of the discrepancies in atomic size of the elements.

Pre-Requisites:

Elements, periodic table, Group, electronegativity.

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:

• Down the group, electronegativity first decreases from B to Al and then increases marginally. • This is because of the discrepancies in atomic size of the elements.

What you learn in Practice:

• Group 13 has aluminium, boron which are important industrial elements.

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