Bohr's Model For Hydrogen Atom
Chapter Name : Structure Of Atom |
Sub Topic Code : 102_11_02_04_02 |
Topic Name : Bohr's Model For Hydrogen Atom |
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Sub Topic Name : Explanation Of Line Spectrum Of Hydrogen |
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Introduction
•
Radiation (energy) is absorbed if the electron moves from an outer
shell to an inner shell.
•
Radiation (energy) is emitted if the electron moves from an inner
shell to the outer shell.
•
Expression of
energy difference in terms of wave number is also known as Rydberg formula.
• Bohr’s calculations successfully explained the Lyman, Balmer and Paschen series and also predicted the lines that were not yet observed, that’s why his model for an atom is immediately accepted.
Pre-Requisites:
Wave, atom, spectrum
Activity:
Each element has an atom.
The atoms combine to make compounds and molecules.
Real Life Question:
How are electrons
distributed around the atom?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Atom | An atom is the smallest unit of an element. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Racing track | Picture the atom to be similar to a racing track. The individual concentric tracks are the orbits and the middle ground is the nucleus whereas the athletes are the electrons. |
Real life uses :
Atoms make up molecules.
Places to visit :
Racing track, stadium.
Practical examples around us
| Examples | Explainations |
|---|---|
| Racing track | Picture the atom to be similar to a racing track. The individual concentric tracks are the orbits and the middle ground is the nucleus whereas the athletes are the electrons. |
What you learn in Theory:
•
Radiation (energy) is absorbed if the electron moves from an outer
shell to an inner shell.
• Radiation (energy) is emitted if the electron moves from an inner shell to the outer shell.
What you learn in Practice:
The atomic structure is
important to know the structure of the molecule.