A pair in which both species are not likely to exist is:
1. | \(H^+_2,He^{2-}_2\) | 2. | \(H^-_2,He^{2+}_2\) |
3. | \(H^{2+}_2,He_2\) | 4. | \(H^+_2,He^{2+}_2\) |
A molecule that has an unequal bond length is :
1. | ClF3 | 2. | BF3 |
3. | AlF3 | 4. | NF3 |
Amongst the one with the highest boiling point is:
1. H2O because of H-bonding.
2. H2Te because of higher molecular weight.
3. H2S because of H-bonding.
4. H2Se because of lower molecular weight.
The correct order of electronegativity of hybrid orbitals of carbon is:
1. sp > sp2 < sp3
2. sp > sp2 > sp3
3. sp < sp2 > sp3
4. sp < sp2 < sp3
has a net dipole moment while
\(BeF_2\) has zero dipole moment because :
1. F is more electronegative than oxygen.
2. Be is more electronegative than oxygen.
3. molecule is linear and \(BeF_2\) is bent.
4. molecule is linear and is bent.
A molecule among the following with non-zero dipole moment is:
1.
2.
3.
4.
Which molecule is least likely to form hydrogen bonds?
1. | \(\mathrm{NH}_3\) | 2. | \(\mathrm{H_2NOH}\) |
3. | \(\mathrm{HF}\) | 4. | \(\mathrm{CH_3F}\) |
The correct geometry and hybridization for XeF4 are :
1. Octahedral, sp3d2
2. Trigonal bipyramidal, sp3d3
3. Planar triangle, sp3d3
4. Square planar, sp3d2
Match the compounds given in Column I with the hybridization and shape given in Column II and mark the correct option.
Column I | Column II |
A. XeF6 | 1. Distorted octahedral |
B. XeO3 | 2. Square planar |
C. XeOF4 | 3. Pyramidal |
D. XeF4 | 4. Square pyramidal |
A | B | C | D | |
1. | 1 | 2 | 4 | 3 |
2. | 4 | 3 | 1 | 2 |
3. | 4 | 1 | 2 | 3 |
4. | 1 | 3 | 4 | 2 |
Which of the following pairs of ions are isoelectronic and isostructural?
1.
2.
3.
4.