Q. No.
The structure of PCl5 in the solid state is:
1. Square pyramidal.
2. Tetrahedral [PCl4]+ and octahedral [PCl6]–
3. Square planar [PCl4] and octahedral [PCl6]–
4. Trigonal bipyramidal.
In which of the following pairs the two species are not isostructural?
1. PCl4+ and SiCl4
2. PF5 and BrF5
3. AlF63− and SF6
4. CO32− and NO3−
Among the following, the correct statements about
| (a) |
The hybridisation of the central atom is sp3. |
| (b) |
Its resonance structure has one C-O single bond and two C=O double bonds. |
| (c) |
The average formal charge on each oxygen atom is 0.67 units. |
| (d) |
All C-O bond lengths are equal. |
Choose the correct option :
| 1. | (a), (b) | 2. | (b), (c) |
| 3. | (c), (d) | 4. | (b), (d) |
Lattice energy for an ionic compound relies on:
| 1. | The size and charge of the ion. |
| 2. | Packing of ions only |
| 3. | Size of the ions only |
| 4. | Charge on the ions only |
| 1. | 6σ and 3π bonds | 2. | 7σ and 2π bonds |
| 3. | 7σ and 3π bonds | 4. | 5σ and 3π bonds |
1. Square pyramidal
2. Square planar
3. Trigonal bipyramidal
4. Octahedral
The electronic configurations of the elements A, B, and C are given below.
The stable form of A may be represented by the formula:
| 1. | A | 2. | A2 |
| 3. | A3 | 4. | A4 |
| Assertion (A): | C3O2 is a linear structure. |
| Reason (R): | Each C atom in C3O2 is sp hybridized. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
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