[He] 2s1
The electron configuration of uranium is (short): [Rn]5f36d17s2.
No Such ... all atoms have an electron configuration, yet Ca++ is not a noble gas.
[Ar] 4s2
[Xe] 4f14 5d9 6s1
(Xe)6s24f145d4
In full starting with 1s and through each level. The noble gas form, where only the electrons above the highest noble gas configuration are shown, the noble gas is in square brackets. Example chlorine 1s2, 2s2, 2p6, 3s2, 3p5 [Ne]) 3s2 3p5
The electron configuration of oxygen (atomic number 8) is 1s2 2s2 2p4The noble gas form is [He] 2s22p4
Electron configuration of uranium is: [Rn]5f36d17s2
The electron configuration of helium is: [Xe] 4f15d16s2.
"Noble gas configuration" means that in writing out an electron configuration for an atom, rather than writing out the occupation of each and every orbital specifically, you instead lump all of the core electrons together and designate it with the symbol of the corresponding noble gas on the periodic table (in brackets). For example, the noble gas configuration of nitrogen is [He]2s22p3
[Ne]3s23p4
The electron configuratin for tellurium with using the noble gas abbreviation is: [Kr] 5s2 4d10 5p4