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  2. Ruthenium - Wikipedia

    en.wikipedia.org/wiki/Ruthenium

    The native form of ruthenium is a very rare mineral (Ir replaces part of Ru in its structure). [ 21 ] [ 22 ] Ruthenium has a relatively high fission product yield in nuclear fission; and given that its most long-lived radioisotope has a half life of "only" around a year, there are often proposals to recover ruthenium in a new kind of nuclear ...

  3. Electron configurations of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Electron_configurations_of...

    However there are numerous exceptions; for example the lightest exception is chromium, which would be predicted to have the configuration 1s 2 2s 2 2p 6 3s 2 3p 6 3d 4 4s 2, written as [Ar] 3d 4 4s 2, but whose actual configuration given in the table below is [Ar] 3d 5 4s 1. Note that these electron configurations are given for neutral atoms in ...

  4. Periodic table (electron configurations) - Wikipedia

    en.wikipedia.org/wiki/Periodic_table_(electron...

    Note that these electron configurations are given for neutral atoms in the gas phase, which are not the same as the electron configurations for the same atoms in chemical environments. In many cases, multiple configurations are within a small range of energies and the small irregularities that arise in the d- and f-blocks are quite irrelevant ...

  5. Group 8 element - Wikipedia

    en.wikipedia.org/wiki/Group_8_element

    Group 8 is a group (column) of chemical elements in the periodic table.It consists of iron (Fe), ruthenium (Ru), osmium (Os) and hassium (Hs). [1] " Group 8" is the modern standard designation for this group, adopted by the IUPAC in 1990. [1]

  6. Electron configuration - Wikipedia

    en.wikipedia.org/wiki/Electron_configuration

    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 ...

  7. Creutz–Taube complex - Wikipedia

    en.wikipedia.org/wiki/Creutz–Taube_complex

    The Creutz–Taube ion. The Creutz–Taube ion is the metal complex with the formula {[Ru(NH 3) 5] 2 (C 4 H 4 N 2)} 5+.This cationic species has been heavily studied in an effort to understand the intimate details of inner sphere electron transfer, that is, how electrons move from one metal complex to another.

  8. Isotopes of ruthenium - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_ruthenium

    Most of these have half-lives that are less than five minutes, except 94 Ru (half-life: 51.8 minutes), 95 Ru (half-life: 1.643 hours), and 105 Ru (half-life: 4.44 hours). The primary decay mode before the most abundant isotope, 102 Ru, is electron capture and the primary mode after is beta emission .

  9. Rhodium - Wikipedia

    en.wikipedia.org/wiki/Rhodium

    Rhodium belongs to group 9 of the periodic table, but exhibits an atypical ground state valence electron configuration for that group. Like neighboring elements niobium (41), ruthenium (44), and palladium (46), it only has one electron in its outermost s orbital .