symbols of first 20 elements

Symbols of Elements - Even before knowing what elements were, man started extracting them from their ores. A few metals like gold, silver, iron, copper, lead, tin and mercury were used even in the 1 s t century A.D. A mention of them is made in the 'Charaka S..

Even before knowing what elements were, man started extracting them from their ores. A few metals like gold, silver, iron, copper, lead, tin and mercury were used even in the 1 s t century A.D. A mention of them is made in the 'Charaka Samhita' - a medical treatise of ancient In..

It is a short hand notation of an element. E.g. sodium is denoted as Na..

Symbol - The symbol of an element is a short way of representing an element. Symbols can be formed as follows: 1) By using the first letter of the English name of the element. Hydrogen H Phosphorus P Oxygen O Sulphur S 2) By usin..

Atomatic number of the elements 1st Period n = 1 Short period 2 Atomic number 1 and 2 2nd Period n = 2 Short period 8 Atomic number 3 to 10 3rd Period n = 3 Long period 8 Atomic number 11 to 18 ..

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 Carbon C 6 ..

(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 Nitrogen N 7 2,5 Oxygen O 8 2,6..

Third Row Elements - The third row elements are from sodium to argon. The build up of these eight elements proceeds exactly in the same manner as discussed above. Here 3s- and 3p-orbitals are filled in place of 2s- and 2p-orbitals as has been done in case of Li to Ne. ..