The nickel atom has two electron configurations, [Ar] 4s2 3d8 and [Ar] 4s1 3d9, which are very close in energy.
Long-hand version: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8 Short-hand version: [Ar] 4s^2 3d^8 Note: The "^" symbol means the the following number is in the form of a superscript.
1s2 2s2 2p6 3s2 3p6 4s2 3d8
1s22s22p63s23p64s23d8
The electron configuration of nickel is: [Ar]4s13d9 (four electron shells).
The standard model suggests an electron cofiguration for nickel (element number 28)as :[Ar] 4s2 3d8However, relativistic effects make the more stable configuration [Ar] 4s1 3d91s2,2s2,2p6,3s2,3p6,4s2,3d8
[Ar] 3d^8 4s^2
how would i know it is 2
The nickel noble gas configuration is [Ar]3d8.4s2.
The electron configuration of nickel is: [Ar]4s13d9 (four electron shells).
that is only the electron configuration of nickel, a nickel (II) cation would lose the 2 electrons in the 4s and be 1s2 2s2 2p6 3s2 3p6 3d8
[Ar] 4s2 3d5
The standard model suggests an electron cofiguration for nickel (element number 28)as :[Ar] 4s2 3d8However, relativistic effects make the more stable configuration [Ar] 4s1 3d91s2,2s2,2p6,3s2,3p6,4s2,3d8
Nickel has the atomic number 28 so it has the electron configuration 1s22s22p63s23p64s23d8 .
[Ar] 3d^8 4s^2
The standard model suggests an electron cofiguration for nickel (element number 28)as :[Ar] 4s2 3d8However, relativistic effects make the more stable configuration [Ar] 4s1 3d91s2,2s2,2p6,3s2,3p6,4s2,3d8
3d11 is not possible, The element with the electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4 is Selenium (Se).
The element with the electron configuration 1s2 2s2 2p6 is neon.
how would i know it is 2
Nickel is 3d8 4s2, while copper is 3d10 4s1. If I remember this copper exception to filling its d shell in order correctly the reason is balance in pairs of electrons as the d shell is filled across the row. Chromium is also an exception in this row. ( do not quote me on this, but ask a chemist )
The nickel noble gas configuration is [Ar]3d8.4s2.