Question

Which of the following statement is correct?

• A. Among halogens, radius ratio between iodine and florine is maximum.
• B. Leaving F-F bond, all halogens have weaker X-X bonds than X-X' bonds in interhalogens.
• C. Interhalogen compounds are more reactive than halogen compounds.
• D. Among interhalongen compounds maximum numbers of atoms are present in iodine fluoride.

Answer 1

Answer: (A), (C), (D)

Among interhalongen compounds maximum numbers of atoms are present in iodine fluoride.

Option (A):

Size of halogen increases down the group. Fluorine has the smallest size while iodine has the largest size.

Hence, it is correct as iodine has maximum size and fluorine has minimum size.

Option (B):

The Interhalogen bond (X-X') are weaker as compared to bonds between two halogen atoms (X-X), due to difference in electronegativity of X and X'.

Hence,it is incorrect.

Option(C):

Iodine forms interhalogen compound with Fluorine of type $X{X}_7^{\prime },$ no other halogen forms such type of interhalogen compounds.

It is correct because only iodine can form $I{F}_7$ which has a maximum of 8 atoms.

Option (D):

Interhalogen compounds are more reactive than halogen because they have weaker bond strength than halogen $\left(X_2\right)$ and can be broken easily.

Hence (A),(C) and (D) are the correct options.