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Raman Gupta Grade:
        

sir,


Plz tell me all those examples that u may feel important in which types of bonds such as coordinate or covalent may be asked like in JEE 2009 there was a question on the no of coordinate bonds in dimerised aluminium chloride

6 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear student,


The two main types of bonds formed between atoms are ionic bonds and covalent bonds. An ionic bond is formed when one atom accepts or donates one or more of its valence electrons to another atom. A covalent bond is formed when atoms share valence electrons. The atoms do not always share the electrons equally, so a polar covalent bond may be the result. When electrons are shared by two metallic atoms a metallic bond may be formed. In a covalent bond, electrons are shared between two atoms. The electrons that participate in metallic bonds may be shared between any of the metal atoms in the region.


If the electronegativity values of two atoms are:



  • similar...

    • Metallic bonds form between two metal atoms.

    • Covalent bonds form between two non-metal atoms.

      • Nonpolar covalent bonds form when the electronegativity values are very similar.

      • Polar covalent bonds form when the electronegativity values are a little further apart.































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6 years ago
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