General
✓✗N2 and O2 are converted into monoanions N2– and O2– respectively, which of the following statements is wrong?
- In O2–, bond length increases.
- N2– becomes diamagnetic.
- In N2–, N–N bond weakens.
- In O2–, the O–O bond order decreases.
General
✓✗dp - pp bond present in
- CO32–
- PO43–
- NO3–
- NO2–
General
✓✗The species, having bond angles of 120° is
- ClF3
- NCl3
- BCl3
- PH3
General
✓✗Which species does not exhibit paramagnetism?
- N2+
- O2–
- CO
- NO
General
✓✗In which of the following pairs both the species have sp3 hybridization?
- SiF4, BeH2
- NF3, H2O
- NF3, BF3
- H2S, BF3
General
✓✗Nitrogen forms N2, but phosphorus does not form P2, however, it converts P4, reason is
- triple bond present between phosphorus atom
- pp - pp bonding is weak
- pp - pp bonding is strong
- multiple bonds form easily.
General
✓✗The correct order of the O–O bond length in O2, H2O2 and O3 is
- O2 > H2O2 > O3
- H2O2 > O3 > O2
- O2 > O3 > H2O2
- O3 > H2O2 > O2
General
✓✗According to MO theory which of the lists ranks the nitrogen species in terms of increasing bond order?
- N22– < N2– < N2
- N2 < N22– < N2–
- N2– < N22– < N2
- N2– < N2 < N22–
General
✓✗Among the following which compound will show the highest lattice energy?
- KF
- NaF
- CsF
- RbF
General
✓✗Strongest hydrogen bond is shown by
- water
- ammonia
- hydrogen fluoride
- hydrogen sulphide
General
✓✗The number of anti-bonding electron pairs in O22– molecular ion on the basis of molecular orbital theory is (Atomic number of O is 8)
- 3
- 2
- 5
- 4
General
✓✗N2 and O2 are converted into monocations, N2+ and O2+ respectively. Which is wrong?
- In O2+ paramagnetism decreases.
- N2+ becomes diamagnetic.
- In N2+, the N–N bond weakens.
- In O2+, the O–O bond order increases.
General
✓✗Which of the following molecules does not possess a permanent dipole moment?
- CS2
- SO3
- H2S
- SO2
General
✓✗Among the following, which one is a wrong statement?
- PH5 and BiCl5 do not exist.
- pp-dp bonds are present in SO2.
- SeF4 and CH4 have same shape.
- I3+ has bent geometry.
General
✓✗Which of the following does not apply to metallic bond?
- Overlapping valence orbitals
- Mobile valence electrons
- Delocalized electrons
- Highly directed bonds