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Question
The trihalides of group 15 elements are predominantly ______ and have ______ structures.
Fill in the Blanks
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Solution
The trihalides of group 15 elements are predominantly covalent and have pyramidal structures.
Explanation:
The trihalides of group 15 elements (except BiF3) are predominantly covalent in nature. They have a pyramidal structure in the gaseous state due to sp3 hybridisation of the central atom with one lone pair of electrons.
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