Step 1. Identify Aromatic Stability: The most stable species among the options will be the one that is aromatic as aromatic compounds exhibit additional stability due to delocalized π-electrons.
Step 2. Analyze Each Structure: Option (1): This structure satisfies Huckel’s rule (4n + 2) for aromaticity and has a planar conjugated ring structure, making it aromatic and stable. Other Options: Do not satisfy Huckel’s rule or are non-aromatic.
Step 3. Conclusion: Option (3) is the most stable due to its aromaticity.
If all the words with or without meaning made using all the letters of the word "KANPUR" are arranged as in a dictionary, then the word at 440th position in this arrangement is:
Match List - I with List - II.