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- In quantum mechanics, the principal quantum number (symbolized n) is one of four quantum numbers assigned to each electron in an atom to describe that...8 KB (1,071 words) - 14:03, 4 August 2024
specify the state of the electron in a hydrogen atom, four quantum numbers are needed. The traditional set of quantum numbers includes the principal, azimuthal...31 KB (3,125 words) - 15:04, 9 August 2024- In atomic physics, a magnetic quantum number is a quantum number used to distinguish quantum states of an electron or other particle according to its angular...10 KB (1,196 words) - 18:57, 23 May 2024
- additional quantum numbers ℓ and m) to explain the fine spectroscopic structure of some elements. The multiple electrons with the same principal quantum number...28 KB (2,778 words) - 20:59, 1 November 2024
orbital. The azimuthal quantum number is the second of a set of quantum numbers that describe the unique quantum state of an electron (the others being the...20 KB (2,143 words) - 19:17, 12 October 2024- +s to −s in integer increments. For an electron, ms can be either ++1/2 or −+1/2 . The phrase spin quantum number refers to quantized spin angular...22 KB (2,959 words) - 08:55, 31 May 2024
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure)...60 KB (6,147 words) - 15:47, 29 October 2024
Atomic orbital (redirect from Electron cloud)In quantum mechanics, an atomic orbital (/ˈɔːrbɪtəl/) is a function describing the location and wave-like behavior of an electron in an atom. This function...84 KB (10,978 words) - 06:52, 5 November 2024
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and...50 KB (6,629 words) - 00:13, 5 October 2024
having all the same quantum numbers. Therefore, for two electrons to occupy the same orbital, and thereby have the same orbital quantum number, they must...3 KB (312 words) - 13:28, 13 August 2024- Spin (physics) (redirect from Electron spin)interaction with spin require relativistic quantum mechanics or quantum field theory. The existence of electron spin angular momentum is inferred from experiments...72 KB (10,640 words) - 20:28, 3 November 2024
Hund's rules (category Quantum chemistry)outer valence electrons must be considered. Due to the Pauli exclusion principle, two electrons cannot share the same set of quantum numbers within the same...12 KB (1,584 words) - 12:25, 9 August 2024- The quantum Hall effect (or integer quantum Hall effect) is a quantized version of the Hall effect which is observed in two-dimensional electron systems...37 KB (5,054 words) - 15:27, 6 November 2024
or substructure. The electron's mass is approximately 1/1836 that of the proton. Quantum mechanical properties of the electron include an intrinsic angular...154 KB (15,572 words) - 03:29, 11 November 2024- Flavour (particle physics) (redirect from Flavour quantum numbers)specifies the electron shell in which it resides, which determines the energy level of the whole atom. Analogously, the five flavour quantum numbers (isospin...24 KB (2,962 words) - 17:51, 18 October 2024
follows: in a poly-electron atom it is impossible for any two electrons to have the same two values of all four of their quantum numbers, which are: n, the...25 KB (3,449 words) - 13:58, 4 August 2024- functional theory. According to quantum mechanics, due to the uncertainty principle on an atomic scale the exact location of an electron cannot be predicted, only...16 KB (2,301 words) - 07:52, 1 May 2024
element has more electron shells than a lighter element; a heavier element's valence electrons exist at higher principal quantum numbers (they are farther...24 KB (2,333 words) - 14:12, 27 October 2024
Bohr model (category Foundational quantum physics)to be replaced by the quantum atomic model in the 1920s. It consists of a small, dense nucleus surrounded by orbiting electrons. It is analogous to the...77 KB (10,481 words) - 16:23, 4 November 2024- relativistic treatment of a many-electron system, despite Paul Dirac's 1929 assertion that the only imperfections remaining in quantum mechanics "give rise to...21 KB (2,637 words) - 06:00, 9 November 2024
- helium atom, the existence of half-quantum numbers in band spectra, the continuous spatial distribution of photo-electrons, and the phenomenon of radioactive
- three quantum numbers for each electron), but rather one is forced to use symmetric ones as well (Parahelium). In all cases where the electron spin is
- numbers soon became known as quantum numbers. In the wave function for a hydrogen electron there are always three quantum numbers. The first quantum number