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Question

Chemistry Question on Chemical bonding and molecular structure

Match List - I with List - II.List - IList - II
(A) ICl(IV) Linear
(B) ICl3(I) T-Shape
(C) ClF5(II) Square pyramidal
(D) IF7(III) Pentagonal bipyramidal
Choose the correct answer from the options given below:
A

(A)–(I), (B)–(IV), C–(III), D–(II)

B

(A)–(I), (B)–(III), C–(II), D–(IV)

C

(A)–(IV), (B)–(I), C–(II), D–(III)

D

(A)–(IV), (B)–(III), C–(II), D–(I)

Answer

(A)–(IV), (B)–(I), C–(II), D–(III)

Explanation

Solution

To determine the correct matches, we analyze the molecular geometry of each compound based on the number of bond pairs and lone pairs of electrons around the central atom.
Step 1: Molecular geometry of ICl\text{ICl}
ICl\text{ICl} consists of only two atoms (iodine and chlorine), forming a diatomic molecule. Its molecular geometry is linear. Thus:
(A)ICl(IV) Linear.(A) \, \text{ICl} \rightarrow \text{(IV) Linear}.
Step 2: Molecular geometry of ICl3\text{ICl}_3
ICl3\text{ICl}_3 has 3 bond pairs and 2 lone pairs around the iodine atom. According to the VSEPR theory, this results in a T-shaped molecular geometry. Thus:
(B)ICl3(I) T-Shape.(B) \, \text{ICl}_3 \rightarrow \text{(I) T-Shape}.
Step 3: Molecular geometry of ClF5\text{ClF}_5
ClF5\text{ClF}_5 has 5 bond pairs and 1 lone pair around the central chlorine atom. According to the VSEPR theory, this configuration forms a square pyramidal geometry. Thus:
(C)ClF5(II) Square pyramidal.(C) \, \text{ClF}_5 \rightarrow \text{(II) Square pyramidal}.
Step 4: Molecular geometry of IF7\text{IF}_7
IF7\text{IF}_7 has 7 bond pairs and no lone pairs around the iodine atom. This configuration corresponds to a pentagonal bipyramidal geometry.
Thus:
(D)IF7(III) Pentagonal bipyramidal.(D) \, \text{IF}_7 \rightarrow \text{(III) Pentagonal bipyramidal}.
Final Matches:
(A)(IV),(B)(I),(C)(II),(D)(III).(A) \rightarrow \text{(IV)}, \, (B) \rightarrow \text{(I)}, \, (C) \rightarrow \text{(II)}, \, (D) \rightarrow \text{(III)}.
Correct Answer: (3).