Match the following compounds with their corresponding physical properties: Column-I Column-II (a) IBr (i) Orange solid (b) ClF 3 (ii) Yellow-green liquid (c) BrF 3 (iii) Black solid (d) ICl 3 (iv) Colorless gas

( a − iii ) , ( b − iv ) , ( c − ii ) , ( d − i )

( a − ii ) , ( b − i ) , ( c − iv ) , ( d − ii )

( a − i ) , ( b − ii ) , ( c − ii ) , ( d − iv )

( a − iv ) , ( b − ii ) , ( c − i ) , ( d − iii )

The electron gain enthalpy (in kJ m o l ) of fluorine, chlorine, bromine and iodine, respectively, are

- 333 , - 349 , - 325 and - 296

- 296 , - 325 , - 333 and - 349

- 349 , - 333 , - 325 and - 296

- 333 , - 325 , - 349 and - 296

MEDIUM

Earn 100

Bromine has the highest negative electron gain enthalpy as compared to other elements of $4^{th}$ period. Explain.

Important Questions on The p-Block Elements

EASY

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

Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

MEDIUM

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

Why are halogens coloured.

EASY

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

The strongest reducing agent amongst the following is:

EASY

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

Match the following compounds with their corresponding physical properties:

	Column-I		Column-II
(a)	$IBr$	(i)	Orange solid
(b)	${ClF}_{3}$	(ii)	Yellow-green liquid
(c)	${BrF}_{3}$	(iii)	Black solid
(d)	${ICl}_{3}$	(iv)	Colorless gas

MEDIUM

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

The increasing order of the atomic radii of the following elements is:

(a) C

(b) O

(c) F

(d) C l

(e) B r

EASY

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

Why is

F_{2}

the strongest oxidizing agent (among halogens) although electron affinity of

{Cl}_{2}

is higher than

F_{2} ?

EASY

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

Which of the following has highest electron affinity?

HARD

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

What are the correct orders of bond lengths

d_{X - X}

and bond dissociation enthalpies

{BDE}_{X - X}

for

F_{2}

and

{Cl}_{2}

? (where

X = F

Cl

)

EASY

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

Which halogen has the highest value of negative electron gain enthalpy?

MEDIUM

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

The electron gain enthalpy

Δ_{eg} H

Cl (g)

- 349 kJ {mol}^{- 1}

. If the ground state energy of

Cl (g)

x kJ {mol}^{- 1},

the ground state energy

(in kJ {mol}^{- 1})

{Cl}^{-} (g)

EASY

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

Assertion (A) : The bond dissociation energy increases from $F_{2}$ to ${Cl}_{2}$ and then decreases to $I_{2}$

Reason (R) : The low bond energy of fluorine is due to the repulsion between the lone pairs of electrons in two fluorine atoms.
The correct option among the following is

EASY

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

The electron gain enthalpy (in

\frac{kJ}{m o l}

) of fluorine, chlorine, bromine and iodine, respectively, are

HARD

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

Which of the following facts related to halogens is not correctly matched ?

EASY

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

Which of the following is the CORRECT reason for

HI

solution turning brown on exposure to air ?

EASY

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

The most electronegative element belongs to _________

HARD

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

Account for the following statement :

Although fluorine has less negative electron gain enthalpy yet $F_{2}$ is strong oxidizing agent.

EASY

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

The correct order of the thermal stability of hydrogen halides

(H - X)

EASY

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

Which of the following has the maximum vapour pressure?

MEDIUM

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

Arrange the following bonds according to their average bond energies in descending order:

C - C l, C - B r, C - F, C - I

MEDIUM

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

Which among the following does not form polyhalide ion?

Bromine has the highest negative electron gain enthalpy as compared to other elements of 4th period. Explain.

Important Questions on The p-Block Elements

Learn and Prepare for any exam you want !

Bromine has the highest negative electron gain enthalpy as compared to other elements of $4^{th}$ period. Explain.