why trihalide except bif3 covalent in nature?
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Hii Abhishek,
I think you're talking about trihalides of group 15 elements in general.
● Explanation -
- Most of group 15 elements are smaller in size except Bi.
- For other elements, smaller cation & larger anion favours covalent Compound MX3 according to Fajan's rule.
- For Bi, smaller anion & bigger cation favours ionic bond in BF3 by Fajan's rule.
Hope this helps you.
I think you're talking about trihalides of group 15 elements in general.
● Explanation -
- Most of group 15 elements are smaller in size except Bi.
- For other elements, smaller cation & larger anion favours covalent Compound MX3 according to Fajan's rule.
- For Bi, smaller anion & bigger cation favours ionic bond in BF3 by Fajan's rule.
Hope this helps you.
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