Electron configuration carbon family elements

Symbol Sn atomic number 50 atomic weight 118.69 a Group IV A (Group 14) metaUic element of carbon family electron configuration Kr] 4di°5s25p2 valence states +2, +4 atomic radius 1.41 A electronegativity 1.7 standard electrode potential, E° for Sn2+ -i- 2e Sn is -0.1375 V ten naturally-occurring sta-... 

It is assumed that the use of the Periodic Table as a basis of study of the properties of the elements is understood. Its value for this purpose stems from the fact that atoms with similar electron configurations lie in the same columns. For example, excluding completely filled inner shells, the configurations of the atoms C, Si, Ge, Sn, Pb are 2p, 3p2, 4p2, 5p and Gp respectively all the elements have the same spectroscopic ground state as carbon, namely P, and the similarity of their outermost structure is responsible for a family relationship in chemical properties. 

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