Which of the following molecules/ions does not contain unpaired electrons?
(1) O
(2)
(3)
(4) O
A molecule or ion that has an unequal bond length is:
1. | \(\mathrm{SF}_4\) | 2. | \(\mathrm{SiF}_4\) |
3. | \(\mathrm{XeF}_4\) | 4. | \(\mathrm{BF}^-_4\) |
Which of the following species exhibits the diamagnetic behaviour?
(1) O
(2) O
(3) NO
(4) O
The correct increasing order of the polarizing power of the cationic species is:
1.
2.
3.
4.
Which one of the following pair of species have the same bond order?
(1) CN and NO
(2) CN and CN
(3) O and CN
(4) NO and CN
Among the following, the maximum covalent character is shown by which compound:
1.
2.
3.
4.
Match the compounds of Xe in column I with the molecular structure in column II.
Column-I Column-II
(a) (i) Square planar
(b) (ii) Linear
(c) (iii) Square pyramidal
(d) (iv) Pyramidal
(1) (a)-(ii) (b)-(i) (c)-(iii) (d)-(iv)
(2) (a)-(ii) (b)-(iv) (c)-(iii) (d)-(i)
(3) (a)-(ii) (b)-(iii) (c)-(i) (d)-(iv)
(4) (a)-(ii) (b)-(i) (c)-(iv) (d)-(iii)
The correct relationship for the bond angle of water and dimethyl ether is:
1. | Water > dimethyl ether | 2. | Dimethyl ether > Water |
3. | Dimethyl ether = Water | 4. | Can not be determined. |
The decreasing order of ionic character of the N-H, F-H, C-H, and O-H, is :
1. | N-H > F-H > C-H > O-H |
2. | F-H > N-H > C-H > O-H |
3. | O-H > C-H > F-H > N-H |
4. | F-H > O-H > N-H > C-H |
Which among the following does not contain a set of isoelectronic species?
1.
2.
3.
4.