It is [Ar] 3d1 4s2
Yes it is possible to write the noble gas configuration of all elements, though it is not possible to list all of them here.
Electron configuration of uranium is: [Rn]5f36d17s2
The noble gas electron configuration of a sodium ion is the same as that of neon, which is 1s² 2s² 2p⁶. This configuration represents the arrangement of electrons in the nearest noble gas element to sodium (Ne) before it loses one electron to become a sodium ion (Na+).
The electron configuration of fluorine is 1s2 2s2 2p5.
[Ne] 3s2 3p6
Yes it is possible to write the noble gas configuration of all elements, though it is not possible to list all of them here.
Actually it's [Kr]5s1 4d8 Rhodium has an atypical configuration
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
[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.
Electron configuration of uranium is: [Rn]5f36d17s2
The noble gas electron configuration of a sodium ion is the same as that of neon, which is 1s² 2s² 2p⁶. This configuration represents the arrangement of electrons in the nearest noble gas element to sodium (Ne) before it loses one electron to become a sodium ion (Na+).
The electron configuration of fluorine is 1s2 2s2 2p5.
[Ne] 3s2 3p6
In noble gas notation, you don't have to write the electron configuration up to that noble gas. You simply put the noble gas in brackets [noble gas] and then continue to write the electron configuration from that point. It just makes it shorter and easier to write electron configurations for elements with a lot of electrons.
The electron configuration of aluminium is [Ne]3s2.3p1.
The electron configuration for zinc is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10.
The outer electron configuration for oxygen is 2s^2 2p^4. This means that oxygen has 6 outer electrons in its valence shell.