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Atomic Model Timeline

Bernie Amano constructed a timeline of atomic models from 1803 to 1926. The timeline shows the proponents of each model, the year and name of the model, and a brief description. It traces the development of atomic theory from Dalton's billiard ball model to the current model where electrons occupy regions of space around the nucleus determined by their energies.

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Berlyn Amano
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472 views2 pages

Atomic Model Timeline

Bernie Amano constructed a timeline of atomic models from 1803 to 1926. The timeline shows the proponents of each model, the year and name of the model, and a brief description. It traces the development of atomic theory from Dalton's billiard ball model to the current model where electrons occupy regions of space around the nucleus determined by their energies.

Uploaded by

Berlyn Amano
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Name: AMANO, BERNIE L.

___ Grade & Strand: 11 – STEM A___

Atomic Model Timeline


Direction: Construct a time of atomic model by completing the table with the items below.

Proponents Year - Name of Model Description


1. Dalton 1803- Billiard Model Dalton proposes the
indivisible unit of element is
the atom.

2. Thompson 1904 - Plum Pudding Thompson discovered


Model electrons, believed to
reside within a sphere of
uniform positive
charge( the plum pudding
model).

3. Rutherford 1911 - Rutherford Model Rutherford demonstrates


the existence of a
positively charged nucleus
that contains nearly all
mass of an atom.

4. Bohr 1913 - Bohr Model Bohr proposes fixed


circular orbits around the
nucleus for electrons.

5. Schrodinger 1926 - Electron Cloud In the Current model of the atom,


Model electrons occupy regions of
space(orbitals) Around the
nucleus determined by their
energies.

● Billiard Model Rutherford Model Bohr Model Plum Pudding Model

● Electron Cloud Model Dalton Thompson Rutherford

● Schrodinger Bohr
● In the Current model of the ato, electrons occupy regions of space(orbitals)
Around the nucleus determined by their energies.

● Bohr proposes fixed circular orbits around the nucleus for electrons.

● Thompson discovered electrons, believed to reside within a sphere of uniform


positive charge( the plum pudding model).

● Dalton proposes the indivisible unit of element is the atom.

● Rutherford demonstrates the existence of a positively charged nucleus that


contains nearly all mass of an atom.
● 1911 1913 1803 1926 1904

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