which is the first element in the periodic table to have an electron configuration in the 4th energy level?

Group A 1A 2A 3A 4A 5A 6A 7A 0 Period 1 1 H 2 He Period 2 3 Li 2,1 4 Be 2,2 5 B 2,3 6 C 2,4 7 N 2,5 8 O 2,6 9 F 2,7 10 Ne 2,8 Period..

The arrangement of electrons in the various shells/orbits/energy levels of an atom of the element is known as electronic configuration. Keeping the Bohr and Bury rules in mind let us write the electronic configuration o..

Group --> Period 1A 2A 3A 4A 5A 6A 7A 0 Period 1 1 H 1 2 He 2 Period 2 3 Li 2,1 4 ..

(Inert gases are indicated in blue) Element Symbol Atomic number Electronic configuration (or Electron arrangement) K L M N Hydrogen H 1 1 Helium He 2 2 Lithium Li 3 2,1 Beryllium Be 4 2,2 Boron B 5 2,3 Carbon C 6 2,4..

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 ..

Position of Elements in the Modern Periodic Table - Types of Elements On the basis of electronic configuration, the elements of the periodic table are classified into: Noble gases Normal elements Tra..

Periodic Table and Valency of Elements - a) Group IA, IIA and IIIA consists of metals of normal elements. They have 1, 2, or 3 valence electrons which they can easily donate to acquire the configuration of nearest noble gas. They..

and valence electrons of some atoms Element Atomic Number Electronic Configuration Valence Electrons Sodium 11 2,8,1 1 Carbon 6 2,4 4 Oxygen 8 2,6 6 Calcium 20 2,8,8,2 2 Valence ..

Molecular orbital energy level diagram gives very valuable information regarding the behaviour of molecules. The important information conveyed by the electronic configuration of a molecule ..

Electronic Configurations of Atoms - The distribution of electrons in different orbitals is known as electronic configuration of the atom. The orbitals are indicated by a box (square or circular) and electrons are indicated by arrows. An e..