For interhalogens of the type AX n ( A , X = halogen atoms; n = 1 or 3 or 5 or 7 ), what relation exists between A and X ? How does their reactivity vary with individual halogens?

For interhalogens of the type AX n ( A , X = halogen atoms; n = 1 or 3 or 5 or 7 ), X is small sized halogen atom showing negative oxidation state and A is a large size halogen atom showing positive oxidation state. For example: AX ( ClF , BrF ) AX 3 ( ClF 3 , BrF 3 ) AX 5 ( ClF 5 , IF 5 ) AX 7 ( IF 7 ) Interhalogen compounds are more reactive than halogens except fluorine because the A - X bond in interhalogens is weaker than X - X bond in individual halogens.

HARD

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Only iodine forms a heptafluoride ${IF}_{7}$ , but chlorine and bromine give pentafluorides. The reason for this is

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Important Questions on The p-Block Elements

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 17 Elements

{ClF}_{5}

exist in which state at room temperature?

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 17 Elements

Which among the following is the most reactive?

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 17 Elements

The interhalogen compound formed from the reaction of bromine with excess of fluorine is a

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 17 Elements

Match the interhalogen compounds of column I with the geometry in column II and assign the correct code.

Column I	Column II
a. ${XX}^{'}$	(i) T-shape
b. ${XX}_{3}^{'}$	(ii) Pentagonal bipyramidal
c. ${XX}_{5}^{'}$	(iii) Linear
d. ${XX}_{7}^{'}$	(iv) Square – pyramidal
	(v) Tetrahedral

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 17 Elements

Hybridization in

{IF}_{7}

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 17 Elements

{AB}_{3}

is an interhalogen T-shaped molecule. The number of lone pairs of electrons on

A

is (Integer answer)

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 17 Elements

Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$ .

Assertion $(A)$ : $ICl$ is more reactive than $I_{2}$ .

Reason $(R)$ : $I - Cl$ bond is weaker than $I - I$ bond. In the light of the above statements, choose the most appropriate answer from the options given below: (1) Both $(A)$ and $(R)$ are correct but $(R)$ is not the correct explanation of $(A)$ .