Electron configuration is the arrangement of electrons in an atom. There are four blocks in the Periodic Table: S, P, D, F. Block S is groups 1 and 2. Block P is groups 13-18. Block D is groups 3-12. And block F is the lanthanides and actinides. There are several exceptions, for example He is considered part of S block even though it is over group 18. Here are some examples:
He - 1S2
Al - 1S22S22P1
Ni - 1S22S22P63S23P64D8
Shorthand form uses the noble gases (group 18). Whatever element you are using, go to the closest noble gas. For example:
Ca - [Ar] 4S2
The electron configuration (short form) of fermium is: [Rn]5f127s2.
The ground state configuration of 1s²2s²2p²3s²3p¹ is [Ne]3s²3p¹. This notation represents the electron configuration in shorthand form, where [Ne] represents the electron configuration of the noble gas neon (1s²2s²2p⁶).
The long form electron configuration for carbon is simply 1s2 2s2 2p2. The noble gas shortcut electron configuration for C is [He] 2s2 2p2.
The electron configuration of cesium in noble gas form would be [Xe] 6s^1. This indicates that cesium has the same electron configuration as the noble gas xenon in addition to one extra electron in the 6s orbital.
The electron configuration of magnesium in long form is 1s² 2s² 2p⁶ 3s². In short form, it can be represented as [Ne] 3s², where [Ne] denotes the electron configuration of neon, which accounts for the filled inner shells. Magnesium has a total of 12 electrons, and the configuration reflects its position in group 2 of the periodic table.
The electron configuration (short form) of fermium is: [Rn]5f127s2.
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The ground state configuration of 1s²2s²2p²3s²3p¹ is [Ne]3s²3p¹. This notation represents the electron configuration in shorthand form, where [Ne] represents the electron configuration of the noble gas neon (1s²2s²2p⁶).
The electronic configuration of einsteinium is: [Rn]5f11.7s2.
Ar is Argon and Ar 4s1 is the short form of the electron configuration 1s2 2s2 2s6 3s2 3s6 4s1. It means add 4s1 to the electron configuration of Argon to get the electron configuration of potassium.
The long form electron configuration of tungsten is Xe 4f14 5d4 6s2.
The short form electron configuration for fluorine is [He] 2s2 2p5. The [He] represents the electron configuration of helium, which has 2 electrons in its outer shell.
It is a shorthand form of the electronic configuration. A typical example is Potassium Full electronic configuration 1s2 2s2 2p6 3s2 3p6 4s1 Noble gas notation [Ar] 4s1
The long form electron configuration for carbon is simply 1s2 2s2 2p2. The noble gas shortcut electron configuration for C is [He] 2s2 2p2.
They achieve the electron configuration of a noble gas.
[Kr] 5s(1)or, in the longer version1s(2) 2s(2) 2p(6) 3s(2) 3p(6) 4s(2) 3d(10) 4p(6) 5s(1)Note: All the numbers in the parentheses are supposed to be in superscript (not sure how to do it) and they represent the number of electrons in the sublevel. The first configuration uses the noble gas Krypton (basically an abbreviated form of electron configuration). Both configurations are according to the Aufbau principle (lower energy levels are filled in first). So, if you're confused when you see, for example, 4s before 3d, this is just according to the principle.
The electron configuration of cesium in noble gas form would be [Xe] 6s^1. This indicates that cesium has the same electron configuration as the noble gas xenon in addition to one extra electron in the 6s orbital.