| List - I | List - II |
|---|---|
| (A) ICl | (IV) Linear |
| (B) ICl3 | (I) T-Shape |
| (C) ClF5 | (II) Square pyramidal |
| (D) IF7 | (III) Pentagonal bipyramidal |
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 \(\text{ICl}\)
\(\text{ICl}\) consists of only two atoms (iodine and chlorine), forming a diatomic molecule. Its molecular geometry is linear. Thus:
\[(A) \, \text{ICl} \rightarrow \text{(IV) Linear}.\]
Step 2: Molecular geometry of \(\text{ICl}_3\)
\(\text{ICl}_3\) 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:
\[(B) \, \text{ICl}_3 \rightarrow \text{(I) T-Shape}.\]
Step 3: Molecular geometry of \(\text{ClF}_5\)
\(\text{ClF}_5\) 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:
\[(C) \, \text{ClF}_5 \rightarrow \text{(II) Square pyramidal}.\]
Step 4: Molecular geometry of \(\text{IF}_7\)
\(\text{IF}_7\) has 7 bond pairs and no lone pairs around the iodine atom. This configuration corresponds to a pentagonal bipyramidal geometry.
Thus:
\[(D) \, \text{IF}_7 \rightarrow \text{(III) Pentagonal bipyramidal}.\]
Final Matches:
\[(A) \rightarrow \text{(IV)}, \, (B) \rightarrow \text{(I)}, \, (C) \rightarrow \text{(II)}, \, (D) \rightarrow \text{(III)}.\]
Correct Answer: (3).
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)

Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)
A black body is at a temperature of 2880 K. The energy of radiation emitted by this body with wavelength between 499 nm and 500 nm is U1, between 999 nm and 1000 nm is U2 and between 1499 nm and 1500 nm is U3. The Wien's constant, b = 2.88×106 nm-K. Then,