electronic configurations of group a

Element Symbol Atomic No. Electronic Configuration Abundance In Earth’s Crust (in ppm) Fluorine F 9 [He] 2s 2 2p 5 800 Chlorine Cl 9 [Ne] 3s 2 3p 5 800 Bromine Br 9 [Ar] 3d 10 4s 2 4p 5 480 Iodine I 17 ..

Group 2 elements are called alkaline Earth metals. These elements have two electrons in the valence shell of their atoms, preceded by the noble gas configuration. Their general configuration is written as [Noble gas] ns 2 where 'n' represents the valence sh..

The atoms of group 15 have five electrons in the outermost shell, two in s and three in p sub-shell. The general electronic configuration of this group may be expressed as ns 2 np ..

The atoms of group 15 have five electrons in the outermost shell, two in s and three in p sub-shell. The general electronic configuration of this group may be expressed as ns 2 np 3..

The atoms of group 17 have seven electrons in the outermost shell, and have the general electronic configuration ns 2 np ..

The elements of group 14 have four electrons in the outermost orbitals. The general configuration may be written as ns 2 np 2 (one electron in the outermost p-orbitals and two electrons in the s-orbital..

The elements of group 13 have the general configuration ns 2 np 1 (one electron in the outermost p-orbitals and two electrons in the s-orbital). Their electronic configurations are given in the below tab..

All the alkali metals have one electron in their outermost 's' orbitals preceded by the noble gas configuration. Thus, the general configuration of alkali metals may be written as [Noble gas] ns 1 where 'n' represents the valence shell. The electronic ..