Perhaps the electronic configuration of Chromium? Ar for argon, argon has 18 electrons. Electronic configuration of argon can be written as 1s22s22p63s23p6. Electronic configuration of chromium is 1s22s22p63s23p63d54s1. As you can see you can just replace that long chain of figures in front of 3d54s1 with just Ar. Hence, [Ar]3d54s1.
The abbreviated electron configuration of cobalt is [Ar] 3d7 4s2.
The electron configuration for an atom with atomic number 24 (chromium) is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^5. This represents the distribution of electrons in the various energy levels and sublevels of the chromium atom.
The element symbol for Argon is Ar.
The atomic symbol of argon is Ar.
Argon has three naturally occurring isotopes: ^{36}{18}Ar, ^{38}{18}Ar, and ^{40}_{18}Ar.
[Ar]3d54s1
[Ar]3d54s1
The noble gas configuration of chromium is [Ar] 3d5 4s1. It is written this way because the electron configuration of argon (1s2 2s2 2p6 3s2 3p6) is the closest noble gas configuration to chromium, with 3d5 4s1 representing the additional electrons in the chromium atom.
3d10 configuration is more stable because it fills up the d orbital completely with 10 electrons, making it more stable than having 5 unpaired electrons in the 3d orbital in the 3d5 configuration.
The electron configuration of a neutral chromium atom is [Ar]3d54s1. The electron configuration for manganese is [Ar]3d54s2. The first electron removed from a chromium atom is the single 4s electron, leaving the electron configuration [Ar]3d5. The first electron removed from a magnesium atom is one of the 4s2 electrons, leaving the electron configuration [Ar]3d54s1. Removal of a second electron from a chromium atom involves the removal of one of the 3d electrons, leaving a configuration of [Ar]3d4, which is not a very stable configuration, and requires more energy to achieve. Removal of a second electron from a magnesium atom involves the removal of the second 4s electron, leaving a configuration of [Ar]3d5, which is more stable and requires less energy to achieve.
AR Many people believe it is AK, but that is Alaska.
Ar^30 | 12 Ar^31 | 13 Ar^32 | 14 Ar^33 | 15 Ar^34 | 16 Ar^35 | 17 Ar^36 | 18 Ar^37 | 19 Ar^38 | 20 Ar^39 | 21 Ar^40 | 22 Ar^41 | 23 Ar^42 | 24 Ar^43 | 25 Ar^44 | 26 Ar^45 | 27 Ar^46 | 28 Ar^47 | 29 Ar^48 | 30 Ar^49 | 31 Ar^50 | 32 Ar^51 | 33 Ar^52 | 34 Ar^53 | 35
Ar Ceòl Ar Cànan Ar-A-Mach was created in 2006.
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ar 672-20
ar = on
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