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Chemical Bonding and Molecular Structure
Anionic bond is an extreme case of a polar covalent bond. Justify.
According to Pauling, if the difference in electronegativity between the two atoms forming a bond is 1-9 than the bond has equal covalent and ionic character. However, if the difference becomes more than 1 -9 , the ionic character increases while the polar covalent character decreases. For example, the bond between sodium and fluorine is completely ionic because’ the electronegativity difference in sodium (0-9) and fluorine (4, 0) atoms is 3 , 1. On the other hand, the bond between carbon and chlorine is mainly covalent with the very little ionic character because the electronegativity difference in carbon (2 , 0) and chlorine (3, 0) atoms is (0 , 5).
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Name the conditions for the formation of an ionic bond between two atoms.
What is crystal lattice?
What is electrovalency?
What bond is present in MgCl2 molecules?
Two elements A and B have the electronic configuration as:
A = 1s22s22p63s2 and B = 1s22s22p5
Write the empirical formula of the substance containing A and B.
What type of bonding would you expect between:
(i) a metal and a non-metal
(ii) a non-metal and another non-metal?
Give reasons in one or two sentences for the observation that in their compounds non-metals form anions and not cations.
Out of Na and K, which will form a more stable ionic bond?
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