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Quantum Numbers

Each electron has a set of four numbers, called quantum numbers, that specify it completely; no two electrons in the same atom can have the same four.

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Quantum Numbers, Atomic

Statement of quantum numbers for a hydrogen atom.

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Atomic Number

In the modern periodic table, the elements are actually arranged in order of increasing atomic number--that's the number of protons in one atom of a particular element.

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Pauli Exclusion Principle

No two electrons in an atom can have identical quantum numbers. This is an example of a general principle which applies not only to electrons but also to other particles of half-integer spin ...

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Wolfgang Pauli

Wolfgang Pauli (1900 - 1958) is best known for the Pauli exclusion principle, proposed in 1918, which states that no two electrons in an atom can have the same four quantum numbers. He was awarded ...

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Binary Numbers

This site contains a very simple description of binary numbers and binary arithmetic.

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Fibonacci numbers and the golden section

This pages introduces the Fibonacci numbers and why they appear in various "family trees" and patterns of spirals of leaves and seeds. It also covers why the golden section is used by nature in some ...

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The Joy if Pi

No number has captured the attention and imagination of number fanatics and nerds throughout the ages as much as the ratio of a circle's circumference to its diameter. pi. With historical insight and ...

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Hydrogen Spectrum

The basic hydrogen energy level structure is in agreement with the Bohr model. Common pictures are those of a shell structure with each main shell associated with a value of the principal quantum ...

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Quantum Computation

A lists of FAQs about quantum computing including information on quantum computers, entanglement and cryptography.

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