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.
The correct order of \(\mathrm{C-O}\) bond length among \(\mathrm{CO},\mathrm{CO}_3^{2-},\) and \(\mathrm{CO_2}\) is :
1. \(\mathrm{CO}_2<\mathrm{CO}_3^{2-}<\mathrm{CO} \)
2. \(\mathrm{CO}<\mathrm{CO}_3^{2-}<\mathrm{CO}_2 \)
3. \(\mathrm{CO}_3^{2-}<\mathrm{CO}_2<\mathrm{CO} \)
4. \(\mathrm{CO}<\mathrm{CO}_2<\mathrm{CO}_3^{2-}\)
A molecule that has a complete octet is:
1. BeCl2(dimer)
2. BeH2(dimer)
3. BeH2(s)
4. BeCl2(s)
Mg2C3 reacts with water forming propyne . The number of sigma and pie bonds in \(C_{3}^{4-}\)is-
1. Two sigma and two pi bonds.
2. Three sigma and one pi bonds.
3. Two sigma and one pi bonds.
4. Two sigma and three pi bonds.
The maximum number of 90° angles between bond pair-bond pair of electrons is observed in:
1. sp3d2-hybridization.
2. sp3d-hybridization.
3. dsp2-hybridization.
4. dsp3-hybridization.