Question

If7 is exist but brf7 is not exist why

Answer 1

because Br is too small to accommodate 7 electron but I has ability to do so . so IF7 exist but not BrF7.

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Answer 2

$<strong>If_{7}$ exist but $Brf_{7}$ does not exist because 7 small fluorine atoms can easily accommodate around large iodine atom.

Explanation:

• It is known that fluorine, bromine and iodine are all group 7 elements. The size of these elements increases on moving down the group. Hence, fluorine is the smallest in size and iodine is largest in size.

• So, $IF_{7}$ is an $AX_{7}$ type of interhalogen compound that is formed when there is large electronegativity difference between two halogens and also there is large difference between sizes of the halogen atoms.

• Seven small fluorine atoms are able to accommodate around a large iodine atom but seven fluorine atoms are not able to accommodate around a bromine atom due to electronic repulsion between the fluorine atoms.

Learn more about structure of $IF_{7}$:

https://brainly.in/question/9771809

https://brainly.in/question/8413719

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