Short Answer TypeAn element A has the configuration 1s22s22p63s1 while the configuration of B is 1s22s22p5. What type of bond is likely to be formed between them?
Long Answer TypeShort Answer TypeWhat do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example of each type.
Lewis concept fails to explain:
(i) The cause of covalent bond formation.
(ii) The nature of attractive forces between the constituent atoms of a molecule.
(iii) The geometry of molecules containing covalent bonds.
(iv) The formation of molecules such as PCl5, SF6 and IF7 in which the central atom has more than 8 electrons in its valence shell (violation of octet rule).
(v) The formation of molecules such as BF3, AlCl3 in which the central atom has less than 8 electrons in its valence shell.
(vi) The amount of enthalpy released during covalent bond formation.
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