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

The correct match among the following is -
       A   B    C    D
1.   (iii) (iv) (i) (ii)

2.   (iii) (i) (iv) (ii)

3.   (v) (iv) (iii) (ii)

4.   (iv) (iii) (ii) (i)

Only iodine forms hepta-fluoride ${\mathrm{IF}}_7$, but chlorine and bromine give Penta-fluorides. The reason for this is :

(1) low electron affinity of iodine

(2) unusual pentagonal bipyramidal structure of ${\mathrm{IF}}_7$

(3) that the larger iodine atom can accommodate more number of smaller fluorine atom around it 

(4) the low chemical reactivity of ${\mathrm{IF}}_7$

In the structure of ClF₃, the number of lone pairs of electrons on central atom 'Cl' is:

1. 1

2. 2

3. 3

4. 4

Which of the following interhalogen anions is linear?

(1) $I_3^{-}$

(2) $IC{l}_2^{-}$

(3) Both (a) and (b)

(4) none of these

The number of lone pairs of electrons present in the central atom of $CI{F}_3$ is:

1. 0

2. 1

3. 2

4. 3

Which one of the following is not a pseudo halide?

1. CNO^-

2. RCOO^-

3. OCN^-

4. ${\mathrm{N}}_3^{-}$