Group 18 Elements
Chapter Name : The P- Block Elements |
Sub Topic Code : 102_12_07_23_02 |
Topic Name : Group 18 Elements |
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Sub Topic Name : Electronic Configuration |
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Introduction
• Noble gases have 8 electrons in their valence shell. • All noble gases have general electronic configuration ns2np6 except helium which has 1s2. • Many of the properties of noble gases including their inactive nature are due to their closed shell structures.
Pre-Requisites:
Periodic table, elements,
Activity:
Gas balloons have helium in them.
Real Life Question:
Which gas do balloons have?
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. |
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:
• Noble gases have 8 electrons in their valence shell. • All noble gases have general electronic configuration ns2np6 except helium which has 1s2. • Many of the properties of noble gases including their inactive nature are due to their closed shell structures.
What you learn in Practice:
• Noble gases have 8 electrons in their valence shell. • All noble gases have general electronic configuration ns2np6 except helium which has 1s2. • Many of the properties of noble gases including their inactive nature are due to their closed shell structures.