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Nitin Gupta Grade: 11
        

Is there any way to check whether we have drawn correct lewis dot structure or not except calculation of formal charge method.


I'll surely approve all correct answers

6 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear nitin,


Lewis Structures for Covalent Compounds



  • In a covalent compound, electrons are shared between atoms to form a covalent bond in order that each atom in the compound has a share in the number of electrons required to provide a stable, Noble Gas, electronic configuration.

  • Electrons in the Lewis Structure (electron dot diagram) are paired to show the bonding pair of electrons.

  • Often the shared pair of electrons forming the covalent bond is circled

  • Sometimes the bond itself is shown (-), these structures can be referred to as valence structures.


Examples


hydrogen fluoride, HF



  • Hydrogen atom has 1 valence electron

  • Fluorine atom has 7 valence electrons

  • Hydrogen will share its electron with fluorine to form a bonding pair of electrons (covalent bond) so that the hydrogen atom has a share in 2 valence electrons (electronic configuration of helium) and fluorine has a share in 8 valence electrons (electronic configuration of neon)

  • Lewis Structure (electron dot diagram) for hydrogen fluoride OR

  • Valence Structure for hydrogen fluoride


ammonia, NH3



  • Nitrogen atom has 5 valence electrons

  • Hydrogen atom has 1 valence electron

  • Each of the 3 hydrogen atoms will share its electron with nitrogen to form a bonding pair of electrons (covalent bond) so that each hydrogen atom has a share in 2 valence electrons (electronic configuration of helium) and the nitrogen has a share in 8 valence electrons (electron configuration of neon)

  • Lewis Structure (electron dot diagram) for ammonia OR








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Askiitians Expert


Sagar Singh


B.Tech, IIT Delhi









6 years ago
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