The interhalogen which does not exist is

Which of the following is $NOT$ a characteristic of interhalogen compounds?

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{I}F_5 + 3H_2O \longrightarrow HIO_3 + 5HF$

Given below are two statements:
Statement $I$: The increasing order of boiling point of hydrogen halides is $HCl < HBr < HI < HF$
Statement $II$: The increasing order of melting point of hydrogen halides is $HCl < HBr < HF < HI$
In the light of the above statements, choose the correct answer from the options given below

Which of the following can chlorine not displace?

What is the highest oxidation state exhibited by Group-$17$ elements?