Q. No.
Which pair of ions from the following list do not constitute an iso-electronic pair?
1. Mn2+, Fe3+
2. Fe2+, Mn2+
3. O2-, F-
4. Na+, Mg2+
Match List - I with List - II
| List - I | List - II | ||
| (a). | (i). | Square pyramidal | |
| (b). | (ii). | Trigonal planar | |
| (c). | (iii). | Octahedral | |
| (d). | (iv). | Trigonal bipyramidal |
Choose the correct answer from the options given below:
| (a). | (b). | (c). | (d). | |
| 1. | (iii). | (i). | (iv). | (ii). |
| 2. | (iv). | (iii). | (ii). | (i). |
| 3. | (iv). | (iii). | (i). | (ii). |
| 4. | (ii). | (iii). | (iv). | (i). |
BF3 is a planar and an electron deficient compound. Hybridization and number of electrons around the central atom, respectively are:
| 1. | sp2 and 6 | 2. | sp2 and 8 |
| 3. | sp3 and 4 | 4. | sp3 and 6 |
How many (i) sp2 hybridised carbon atoms and (ii) bonds are present in the following compound?
1. 7, 5
2. 8, 6
3. 7, 6
4. 8, 5
The potential energy (y) curve for H2 formation as a function of internuclear distance (x) of the H atoms is shown below.
The bond energy of H2 is:
1. (b-a)
2.
3.
4. (c-a)
| Molecule | Shape or geometry of the molecule |
| a. PCl5 | Trigonal |
| b. SF6 | Octahedral |
| c. BeCl2 | Linear |
| d. NH3 | Trigonal pyramidal |
| 1. | b | 2. | c |
| 3. | d | 4. | a |
Match the coordination number and type of hybridization with the distribution of hybrid orbitals in space based on Valence bond theory.
| Coordination number and type of hybridisation | Distribution of hybrid orbitals in space |
| (a) 4, sp3 | (i) Trigonal bipyramidal |
| (b) 4, dsp2 | (ii) Octahedral |
| (c) 5, sp3d | (iii) Tetrahedral |
| (d) 6, d2sp3 | (iv) Square planar |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (iii) | (i) | (iv) | (ii) |
Which of the compounds depicted below will exhibit a linear structure?
1. NO2
2. HOCl
3. O3
4. N2O
| 1. | \(O^+_2\) ion is diamagnetic. |
| 2. | The bond orders of \(O_2^{+},O_2,O^-_2\) and \(O_2^{2-}\) are 2.5, 2, 1.5, and 1, respectively. |
| 3. | \(C_2\) molecule has four electrons in its two degenerate \(\pi \) molecular orbitals. |
| 4. | \(H^+_2 \) ion has one electron. |
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