Among the following molecules/ions BF3, NO2-, NH2- , and H2O, the central atom is sp2 hybridized in :
1. NO2- and NH2-
2. NH2- and H2O
3. NO2- and H2O
4. BF3 and NO2-
The correct order of the increasing bond angles in the following triatomic species is :
1. | \(\mathrm{NO}^-_2<\mathrm{NO}^+_2<\mathrm{NO}_2\) | 2. | \(\mathrm{NO}^-_2<\mathrm{NO}_2<\mathrm{NO}^+_2\) |
3. | \(\mathrm{NO}^+_2<\mathrm{NO}_2<\mathrm{NO}^-_2\) | 4. | \(\mathrm{NO}^+_2<\mathrm{NO}^-_2<\mathrm{NO}_2\) |
Compound that does not exhibit hydrogen bonding is-
1. | CH3CH2OH | 2. | |
3. | 4. |
Which is the least polarizable gas among the following?
1. | He | 2. | Ne |
3. | Kr | 4. | Xe |
Correct statement among the following regarding the shape of HgCl2, SnCl2 and F2O is:
1. | All have a linear shape. |
2. | SnCl2 are linear and HgCl2 is V-shaped. |
3. | HgCl2 is linear while SnCl2 and F2O are V-shaped. |
4. | None of the above. |
In BrF3 molecule, the lone pairs occupy equatorial positions to minimize:
1. | Lone pair-bond pair repulsion. |
2. | Bond pair-bond pair repulsion. |
3. | Lone pair-lone pair repulsion and lone pair-bond pair repulsion. |
4. | Lone pair-lone pair repulsion. |
The correct order of the dipole moment of the following molecules is :
1. | I > II > III | 2. | I = II = III |
3. | III > II > I | 4. | I > III > II |
Which of the following molecules exhibits H-bonding?
1. | CH4 | 2. | H2Se |
3. | N2H4 | 4. | H2S |
Compound that is isoelectronic with an adduct of "Diborane and Ammonia" is-
1. Hydrogen peroxide.
2. Diborane (at absolute zero temp.).
3. First member of alkyne series.
4. Diborane (at 10C temp).
The correct order of H-bond strength in the following compounds is:
1. H2O > H2O2 > HF > H2S
2. HF > H2O2 > H2O > H2S
3. HF > H2O > H2S > H2O2
4. HF > H2O > H2O2 > H2S