Why does the heavier elements do not form pπ – pπ multiple bond as

1.	Why does the heavier elements do not form pπ – pπ multiple bond as carbon do?
Answer» Carbon has the unique ability to form pπ – pπ multiple bond with itself and with other atoms of small size and high electro negativity whereas heavier elements do not from pπ – pπ bonds because their atomic orbital’s are too large and diffuse to have effective overlapping.

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