is: a detailed mathematical model of the atom based on quantum mechanics. [P8.3, P11.3]
was formulated: by Erwin Schrödinger (1887-1961) and others around 1925/26. [P8.3, P11.3]
specifies: that many of the physical quantities normally associated with atomic electrons are quantized, and that severe restrictions are placed on others. [P8.3, P11.3]
implies: for example, that it is impossible to determine the position and momentum of an electron simultaneously with arbitrarily high precision (see Heisenberg uncertainty principle), so the idea that the electron follows a classical (Newtonian) orbit has to be abandoned. Instead, the quantum state of the electron is specified by four quantum numbers which correspond to a particular wavefunction or orbital. [P8.3, P11.3]
is also called: the quantum model (of the atom). [P8.3]
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