Atomic model

Spectrum of Hydrogen Atom

Spectrum of Hydrogen Atom

Spectrum of hydrogen At the time of Rutherford ‘s experiments, chemists analyzed chemical components using spectroscopy, and physicists tried to find what kind of order in complex spectral lines. For example, a…
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Structure of an Atom

Structure of an Atom

The History of the Atom Democritus (Ancient Greece) – Predict the presence of an atom Dalton (UK, 1800) – Applied atomic chemistry Krux (Britain, late 19th century) – Invented a cathode ray…
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Energy Band of Metal

Energy Band of Metal

Energy band and energy gap According to Niels Bohr’s atomic model, electrons in the atoms do not have a continuous energy. Electrons can only have a certain set of energy. This is…
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Bohr’s Atomic Model

Bohr’s Atomic Model

In 1913, Niels Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus. The atom only has certain energy levels, they are…
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Scale of Atom

Scale of Atom

Each click of the screen zooms in or out by 10 times. Structure of atoms This universe is composed of about 100 kinds of atoms. The size of a typical atom is…
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Rutherford Scattering

Rutherford Scattering

Discovery of nuclear At the beginning of the 20th century there was little known about the structure of atoms except that they contained electrons. At that time, the atom was known as…
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Electron Configuration of an Atom

Electron Configuration of an Atom

Electron Configuration is the arrangement of electrons in an atom. Electrons fill the lowest energy level first. The atomic numbers tells how far electrons are from the nucleus. And then, what other…
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