The least polar bond is present in which of the following?
1. | O-F | 2. | P-F |
3. | Si-N | 4. | B-F |
The correct order of increasing s-character (in percentage) in the hybrid orbitals of the following molecules/ions is:
(i) | \(\mathrm{CO}^{2-}_3\) |
(ii) | \(\mathrm{XeF}_4\) |
(iii) | \(\mathrm{I}^-_3\) |
(iv) | \(\mathrm{NCl}_3\) |
(v) | \(\mathrm{BeCl}_2\) |
1. | (ii)<(iii)<(iv)<(i)<(v) | 2. | (ii)<(iv)<(iii)<(v)<(i) |
3. | (iii)<(ii)<(i)<(v)<(iv) | 4. | (ii)<(iv)<(iii)<(i)<(v) |
The total number of possible resonance forms for the nitrate ion, () is:
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
The shape of is:
1. | Trigonal planar | 2. | Pyramidal |
3. | Bent T-shape | 4. | See-saw |
The molecular geometry that is least likely to result from a trigonal bipyramidal electron geometry is:
1. | Trigonal planar | 2. | See-saw |
3. | Linear | 4. | T-shaped |
On the left are given decreasing orders of elements for a certain property and on right side is given the property. The incorrect order for the given properties is:
1. : Lattice energy
2. : Electron affinity
3. : Lewis acidic character
4. : Decreasing ionic character
OO bond length ( ) in and is respectively:
1. | 1.22 , 1.48 | 2. | 1.48 , 1.22 |
3. | 1.22 , 1.22 | 4. | 1.48 , 1.48 |
The correct order of 'SO' bond length is:
1. | \(\mathrm{SO}_3^{2-}>\mathrm{SO}_4^{2-}>\mathrm{SO}_3>\mathrm{SO}_2 \) |
2. | \(\mathrm{SO}_3^{2-}>\mathrm{SO}_4^{2-}>\mathrm{SO}_2>\mathrm{SO}_3 \) |
3. | \(\mathrm{SO}_4^{2-}>\mathrm{SO}_3^{2-}>\mathrm{SO}_2>\mathrm{SO}_3 \) |
4. | \(\mathrm{SO}_4^{2-}>\mathrm{SO}_3^{2-}>\mathrm{SO}_3>\mathrm{SO}_2\) |
A compound having a metal-to-metal bond is:
1. Cupric chloride
2. Stannous chloride
3. Mercurous chloride
4. Mercuric chloride
Which of the following pair of elements can form an ionic compound?
1. | \(\mathrm{Na}\) and \(\mathrm{Ca}\) | 2. | \(\mathrm{K}\) and \(O_2\) |
3. | \(O_2\) and \(Cl_2\) | 4. | \(Al\) and \(I_2\) |