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The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. p. 1722. ISBN 1-4020-3555-1. This book contains predicted electron configurations for the elements up to 172, as well as 184, based on relativistic Dirac–Fock calculations by B. Fricke in Fricke, B. (1975). Dunitz ...
In nature, scandium is found exclusively as the isotope 45 Sc, which has a nuclear spin of 7 ⁄ 2; this is its only stable isotope. [13] The known isotopes of scandium range from 37 Sc to 62 Sc. [8] The most stable radioisotope is 46 Sc, which has a half-life of 83.8 days. Others are 47 Sc, 3.35 days; the positron emitter 44 Sc, 4 hours; and ...
The chemistry of scandium is almost completely dominated by the trivalent ion, Sc 3+, due to its electron configuration, [Ar] 3d 1 4s 2. The radii of M 3+ ions in the table below indicate that the chemical properties of scandium ions have more in common with yttrium ions than with aluminium ions. In part because of this similarity, scandium is ...
Grayed out electron numbers indicate subshells filled to their maximum. Bracketed noble gas symbols on the left represent inner configurations that are the same in each period. Written out, these are: He, 2, helium : 1s 2 Ne, 10, neon : 1s 2 2s 2 2p 6 Ar, 18, argon : 1s 2 2s 2 2p 6 3s 2 3p 6 Kr, 36, krypton : 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 ...
Electron configuration 21: Sc, scandium: 2, 8, 9, 2 ... Most of the chemistry has been observed only for the first three members of the group; chemical properties of ...
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. [1] For example, the electron configuration of the neon atom is 1s 2 2s 2 2p 6 , meaning that the 1s, 2s, and 2p subshells are occupied by two, two, and six ...
Chemical elements: electron-configuration and term symbol. Element Group ... Sc scandium: 3 3d 1 4s 2 [Ar] 3d¹ 4s², 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹ 4s² : 2 D 3/2:
Starting from the third element, lithium, the first shell is full, so its third electron occupies a 2s orbital, giving a 1s 2 2s 1 configuration. The 2s electron is lithium's only valence electron, as the 1s subshell is now too tightly bound to the nucleus to participate in chemical bonding to other atoms: such a shell is called a "core shell ...