Atomic Models
Chapter Name : Structure Of Atom |
Sub Topic Code : 102_11_02_02_02 |
Topic Name : Atomic Models |
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Sub Topic Name : Rutherford's Nuclear Model Of Atom |
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Introduction
Discuss the experiment
Pre-Requisites:
Thomson model and its drawbacks
Activity:
Observe the deflections and try n guess the reason behind it.
Real Life Question:
According to Thomson, the alpha particles should have just slowed down, but something different happened. What? Why?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Nucleus Orbits Electrostatic forces | The positive charge and most of the mass of the atom is in an extremely small region called NUCLEUS. Circular paths around nucleus in which electrons move Electrons and the nucleus are held together by electrostatic forces of attraction. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Make a comparison chart between this and the Thomson model | Try and review it a number of times |
Practical examples around us
| Examples | Explainations |
|---|---|
| Solar system | The structure of an atom is compared to it. Nucleus – sun , electrons – planets |
What you learn in Theory:
Rutherford’s model
What you learn in Practice:
How nucleus and electron orbits came into existence