1s2 2s2 2p1
or
2, 3
The expected ground-state electron configuration of copper is ; however, the actual configuration is because a full dsubshell is particularly stable. There are 18 other anomalous elements for which the actual electron configuration is not what would be expected.
Kr is 1s22s22p63s23p64s23d104p6
mg
When the electronic configuration of any element is not the same as we expected, it is known as anomalous EC. For Eg Cromium, Copper and heavier d and f block elements.
The element tungsten (symbol W, atomic number 74) has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d4 and the abbreviated noble gas form [Xe] 4f14 5d4 6s2
The expected ground-state electron configuration of copper is ; however, the actual configuration is because a full dsubshell is particularly stable. There are 18 other anomalous elements for which the actual electron configuration is not what would be expected.
Kr is 1s22s22p63s23p64s23d104p6
You think probably at Unbinilium (120Ubn) an element not still obtained. The supposed electron configuration of Ubn will be [Uuo]7s2.
mg
When the electronic configuration of any element is not the same as we expected, it is known as anomalous EC. For Eg Cromium, Copper and heavier d and f block elements.
The element is magnesium with the electronic configuration 2, 8, 2 and has 2 valence electrons.
if you mean electron configuration. Then there are two ways you can look at this. Usually if you are a young student then all you're expected to know is that: the 1st shell = 2 electrons and 8 electrons on every shell after the first one. However, the actual configuration is 1st shell = 2 2nd shell = 8 3rd shell = 18 4th shell = 32 and so on...
Beryllium should be expected to have a charge of 2+ as is expected of all the elements in Group 2 of the periodic table. But its behavior is somewhat different than other Group 2 elements because it has so few electrons. This element tends to form covalent bonds.All nuclei have a positive charge.So beryllium-9 has a positive charge.
The element tungsten (symbol W, atomic number 74) has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d4 and the abbreviated noble gas form [Xe] 4f14 5d4 6s2
Beryllium should be expected to have a charge of 2+ as is expected of all the elements in Group 2 of the Periodic Table. But its behavior is somewhat different than other Group 2 elements because it has so few electrons. This element tends to form covalent bonds.All nuclei have a positive charge.So beryllium-9 has a positive charge.
expected configuration for Cr is 1s2 2s2 2p6 3s2 3p6 4s2 3d4 but in real, it is 1s2 2s2 2p6 3s2 3p6 4s1 3d5 electron from 4s orbital jumps to 3d orbital to get stable configuration. so the last electron comes in 3d orbital as filling of 3d takes place after filling of 4s orbital. Hence,quantum numbers for last electron in Cr is :- n = 3 l = 2 m = +2 s = +1/2
When the electronic configuration of any element is not the same as we expected, it is known as anomalous EC. For Eg Cromium, Copper and heavier d and f block elements.