and are converted to monocations and respectively. Which of the following is incorrect?
1. In , the bond weakens.
2. In , the bond order increases.
3. In , the paramagnetism decreases.
4. becomes diamagnetic.
The bond angles of \(\mathrm{NH}_3, \mathrm{NH}^+_4~\mathrm{and}~\mathrm{NH}^-_2\) are in the order :
1. | \(\mathrm{NH}^-_2> \mathrm{NH}_3>~\mathrm{NH}^+_4\) | 2. | \(\mathrm{NH}^+_4> \mathrm{NH}_3>~\mathrm{NH}^-_2\) |
3. | \(\mathrm{NH}_3> \mathrm{NH}^-_2>~\mathrm{NH}^+_4\) | 4. | \(\mathrm{NH}_3> \mathrm{NH}^+_4>~\mathrm{NH}^-_2\) |
Which of the following has a maximum 'Cl-O' bond order?
1.
2.
3.
4.
In which of the following compounds is an intramolecular hydrogen bond present?
1. | H2O2 | 2. | HCN |
3. | Cellulose | 4. | Concentrated acetic acid |
The pair of electrons in the given carbanion, CH3C≡C-, is present in which of the following orbitals?
1. | sp3 | 2. | sp2 |
3. | sp | 4. | 2p |
The incorrect statement among the following regarding the molecules of CH4, NH3, and H2O is:
1. | The H-O-H bond angle in H2O is larger than the H-C-H bond angle in CH4. |
2. | The H-O-H bond angle in H2O is smaller than the H-N-H bond angle in NH3. |
3. | The H-C-H bond angle in CH4 is larger than the H-N-H bond angle in NH3. |
4. | The H-C-H bond angle in CH4, the H-N-H bond angle in NH3, and the H-O-H bond angle in H2O are all greater than 90°. |
Which among the following species has a triangular planar shape?
1. | N3- | 2. | NO3- |
3. | NO2- | 4. | CO2 |
Paramagnetic species among the following is:
1. CO
2.
3. CN-
4. NO+
The correct order of solubility in an aqueous medium is:
1. CuS > ZnS > Na2S
2. ZnS > Na2S > CuS
3. Na2S > CuS > ZnS
4. Na2S > ZnS > CuS
XeF2 is isostructural with :
1. TeF2
2. ICI2-
3. SbCl3
4. BCl3