there is no shorthand configuration for helium. its electron configuration is 1s2
1s2 2s2 2p2
[Rn]
[Kr]5s2
It is [Ne] 3S2.
[Kr] 5s2
The electron configuration of zirconium is: [Kr]5s24d2
The shorthand electron configuration of magnesium is [Ne]3s2.
[Rn]
[He]2S1
The shorthand electron configuration allows all of the electrons in a noble gas preceding an element to be omitting and written by [nobel gas name]. For nitrogen, the noble gas preceding it is He. Thus, its configuration is [He]2s2 2p3.
[Kr]5s2
Carbon has the chemical symbol of C and an atomic number of 6. Its shorthand or electron configuration is 1s2 2s2 2p2.
google it
It is [Ne] 3S2.
[Kr] 5s2
[Ne]3s23p3
[Ar]4s23d104p2
The shorthand electron configuration of aluminum is: [Ne] 3s2 3p1