Group 18 Elements
Chapter Name : The P- Block Elements |
Sub Topic Code : 102_12_07_23_04 |
Topic Name : Group 18 Elements |
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Sub Topic Name : Atomic Radii |
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Introduction
• Atomic radii increase down the group with increase in atomic number.
Pre-Requisites:
Periodic table, elements,
Activity:
Gas balloons have helium in them.
Real Life Question:
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Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| group | Group is the vertical column on the periodic table which contains elements having the similar properties. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Neon | Neon is used to make lights. |
Real life uses :
Helium gas is used in gas balloons
Places to visit :
Playground, street signs.
Practical examples around us
| Examples | Explainations |
|---|---|
| Street signs | Some street signs glow due to neon. |
What you learn in Theory:
• Atomic radii increase down the group with increase in atomic number.
What you learn in Practice:
• Atomic radii increase down the group with increase in atomic number.