electronic configuration of first 20 elements

Element Symbol Atomic number Electronic configuration (or Electron arrangement) KLMN Hydrogen H 1 1 Helium He 2 2 Lithium Li 3 2,1 Beryllium Be 4 2,2 Boron B 5 2,3..

: 1. The elements present in same group have same number of valence electrons. 2. The total number of electron present in the valence shell of the representative elements indicates its group number. 3. The electrons are added across a peri..

The arrangement of electrons in the various shells/orbits/energy levels of an atom of the element is known as electronic configuration..

The general electronic configuration of d-block elements is (n-1) d 1-10 ns 1-2 . All the d-block elements except zinc, cadmium and mercury have partially filled d-orbitals. But, zinc, cadmium and mercury have completely filled d..

The elements of this group have six electrons in the outermost shell and have the general electronic configuration as ns 2 np 4..

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..

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). Their electronic configuratio..

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..