A subshell is particularly stable if it is half full or full, the atom would "choose" the more stable one. to attain a more stable configuration, the electron from s orbital jumps to the previous d orbital.Chromium has a configuration of [Ar]4s13d5, although you would expect to see four d electrons instead of five.Cu: [Ar]4s23d9, to gain stability stability, one electron from the s shell jumps into the d shell: [Ar]4s13d10.
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration. Hence they are chemically inert.
nitrogen will get noble gas configuration by adding three more electrons.
If alkali metals loses one electron, they achieve the electronic configuration of the nearest noble gases.
Due to their electron configuration, the atoms in a noble gas hardly attract each other.
Silicon has 4 valence electrons. No noble gases will have 4 valence electrons.
There are no similarities. Noble gases (group 18 elements) have completely filled orbitals with stable electron configuration and are generally unreactive. Alkali metals (group 1 elements) have one valence electron. They are reactive. When these lose one electron, they form ions which has the electronic configuration of the nearest noble gas.
[noble gas]ns2 np6
By acquiring noble gas configuration elements become stable .
[Ne]3s23p4
it only fills the S sublevel
Noble gases have a stable electron configuration. So they are less reactive.
All of the noble gasses have full outer electron shells - rendering them extremely nonreactive. Their electron configuration is what places them in the group on the periodic table that we have designated "noble gases".
The group of elements that have a stable electron configuration are the noble gases.
nitrogen will get noble gas configuration by adding three more electrons.
Helium's electron configuration is 1s2. Neon's electron configuration is 1s22s22p6. All of the rest of the noble gases, like neon, have the maximum number of electrons in their outermost s and p orbitals (valence shells), which is eight.
K+And the K ion configuration is 1s2 2s2 2p6 3s2 3p6Noble gases have the configuration up to 3p6Pseudo noble gases have it up to 3d10
If alkali metals loses one electron, they achieve the electronic configuration of the nearest noble gases.
They have completely filled shells, with eight valence electrons.