1
Question
In which of the following pairs of resonating structures first resonating structure is more contributing toward resonance hybrid than second?
In which of the following pairs of resonating structures first resonating structure is more contributing toward resonance hybrid than second?
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Solution
The correct options are
A
B
Major contributor must have (in the following order of prefrence):
(i) Most atoms with complete octets.
(ii) Maximum number of covalent bonds.
(iii) The smallest number of formal charges.
(iv) Any formal charges on the atoms must be able to accommodate them.
In the above, if you look at the first structure, there is less electrostatic force of repulsion between the two negatively charged oxygen atoms. The charges are separated by a larger distance.
In the first structure shown above, the less electronegative nitrogen atom is holding the positive charge. In the second, the more electronegative oxygen atom has the positive charge.
A
B
Major contributor must have (in the following order of prefrence):
(i) Most atoms with complete octets.
(ii) Maximum number of covalent bonds.
(iii) The smallest number of formal charges.
(iv) Any formal charges on the atoms must be able to accommodate them.
In the above, if you look at the first structure, there is less electrostatic force of repulsion between the two negatively charged oxygen atoms. The charges are separated by a larger distance.
In the first structure shown above, the less electronegative nitrogen atom is holding the positive charge. In the second, the more electronegative oxygen atom has the positive charge.
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