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Interpretation: The valid resonance structure for
Concept introduction: Sometimes the
In some molecules, there is possibility of more than one Lewis structure where all the structures are equally acceptable. One of the acceptable Lewis structures of these molecules is called resonance structure.
All the possible resonance structures are imaginary whereas the resonance hybrid is real.
Any of the possible structure does not exist as such like a stable real molecule. So it is not possible to isolate one resonance structure.
These structures will differ only in the arrangement of the electrons not in the relative position of the atomic nuclei.
Structure with greater number of covalent bonds are more stable comparing to that with lower number of covalent bonds.
Structure which does not involve charge separation is more stable when comparing with structure having positive and negative charge separation.
While drawing resonance structure of a molecule some rules should be followed where the position, over whole charge and chemical framework remains intact. Also only π and nonbonding electron has been moved in all the three resonance structures
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Chemistry: Atoms First
- answer true or flase. don't need an explanation or solution (a) A covalent bond is formed between two atoms whose difference in electronegativity is less than 1.9. (b) If the difference in electronegativity between two atoms is zero (they have identical electronegativ- ities), then the two atoms will not form a covalent bond. (c) A covalent bond formed by sharing two electrons is called a double bond. (d) In the hydrogen molecule (H2), the shared pair of electrons completes the valence shell of each hydrogen. (e) In the molecule CH4 , each hydrogen has an electron configuration like that of helium and carbon has an electron configuration like that of neon. (f) In a polar covalent bond, the more electronegative atom has a partial negative charge (2) and the less electronegative atom has a partial positive charge (1). (g) These bonds are arranged in order of increasing polarity CiH , NiH , OiH. (h) These bonds are arranged in order of increasing polarity HiF , HiCl , HiBr. ( i) A…arrow_forwardOnly typed explanation otherwise leave it Draw the Lewis structure for a iodide monobromide (IBr) molecule.arrow_forwardFormal charge is (select all that are true) equal to the number of valence electrons minus half the number of bonding electrons minus the number of nonbonding electrons. equal to number of valence electrons minus number of bonds minus number of nonbonding electrons. the difference between the number of valence electrons of each atom and the number of electrons the atom is associated with. the charge assigned to an atom in a molecule.arrow_forward
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