Respuesta :

Ʀєєтƙαυя
  • Atomic number of carbon = 6.
  • Electronic configuration has 2 electrons in k shell and 4 electrons in L shell.
  • In order to attain the noble gas configuration, carbon should either gain 4 electrons or lose 4 electrons or can share it's 4 electrons with some other element.
  • Gain of 4 electrons to form octet , 8 electrons in C⁴‐ anion is difficult because then a nucleus with 6 protons will uave to hold extra four electrons.
  • Loss of 4 electrons to attain duplet , 2 electrons like He atom in C⁴+ cation is difficult as it requires large amount of energy to remove four electrons.
  • Carbon , hence overcomes this difficulty by sharing its four valance electrons with other atoms of carbon or with atoms of other elements. These electrons contributed by the atoms for mutual sharing in order to acquire the stable noble configuration is called covalency of that atom . Hence carbon shows tetracovalency.
  • The simplest molecule formed by sharing electrons, cvalent bonds can represent by electron dot structure.

Otras preguntas