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For example, in copper 29 Cu, according to the Madelung rule, the 4s subshell (n + l = 4 + 0 = 4) is occupied before the 3d subshell (n + l = 3 + 2 = 5). The rule then predicts the electron configuration 1s 2 2s 2 2p 6 3s 2 3p 6 3d 9 4s 2, abbreviated [Ar] 3d 9 4s 2 where [Ar] denotes the configuration of argon, the preceding noble gas.
Chromium and copper have electron configurations [Ar] 3d 5 4s 1 and [Ar] 3d 10 4s 1 respectively, i.e. one electron has passed from the 4s-orbital to a 3d-orbital to generate a half-filled or filled subshell. In this case, the usual explanation is that "half-filled or completely filled subshells are particularly stable arrangements of electrons".
According to CD Now, the song was released in 2003 on Swishahouse's The Day Hell Broke Loose 2 AKA Major Without A Major Deal album, but due to word of mouth, and the infamous X-rated version seen on BET: Uncut released in spring of the following year, by late 2004 the song received major radio rotations, and an edited version of the video was released.
The angel number 444 has a lot of meaning, especially when it comes to love, career and health. Here's also what it has to do with your Twin Flame. ... When it comes to double 4s, that’s double ...
A fourth is a musical interval encompassing four staff positions in the music notation of Western culture, and a perfect fourth (Play ⓘ) is the fourth spanning five semitones (half steps, or half tones).
The 4-6-4T was also a fairly common wheel arrangement for passenger tank locomotives.As such, it was essentially the tank locomotive equivalent of a 4-6-0 tender locomotive, with water tanks and a coal bunker supported by four trailing wheels instead of in a tender.
Boarding pass of passenger selected for secondary security screening, indicated by the initials SSSS. CIA Assessment on Surviving Secondary Screening. Secondary Security Screening Selection or Secondary Security Screening Selectee, known by its initials SSSS, is an airport security measure in the United States which selects passengers for additional inspection.
Possession is nine-tenths of the law" is an expression meaning that ownership is easier to maintain if one has possession of something, or difficult to enforce if one does not. The expression is also stated as "possession is ten points of the law", which is credited as derived from the Scottish expression "possession is eleven points in the law ...