In O2 and H2O2 , the O-O bond lengths are 1.21 and 1.48 Å respectively. In ozone, the average O-O bond length is
1.28 Å
1.18 Å
1.44 Å
1.52 Å
Among [Fe(H2O)6]+, [Fe(CN)6]3-, [Fe(Cl)6]3- species, the hybridisation state of the Fe atom are, respectively.
d2sp3, d2sp3, sp3d2
sp3d2,d2sp3, d2sp3
sp3d2, d2sp3,sp3d2
None of the above
Among the following, the molecule that will have the highest dipole movement is
H2
HF
HBr
HCl
B.
HF
Since, dipole moment is directly proportional to difference in electronegativity of the bonded atoms.
As maximum electronegativity difference is shown by H-F. (H is constant and F has maximum electronegativity).
Hence, among all the given options, HF will show highest dipole moment.
Which of the following pair have identical bond order?
CN- and NO+
CN- and O
CN- and CN+
NO+ and O
Which one of the following statements is correct?
Ferromagnetic substance like ZnFe2O4 becomes paramagnetic on heating
NaCl is a paramagentic salt
CuSO4 is a diamagnetic salt
MnO is an example of antiferronmagnetic substance
The bonds present in the structure of dichromate ion are
four equivalent Cr-O bonds only
six equivalent Cr-O bonds and one Cr - O - O bond
six equivalent Cr-O bonds and one O-O bond
eight equivalent Cr-O bonds
Match List-I and List-II and choose the correct matching codes.
List - I | List - II |
A. [Ni(CN)4]2- | 1. Ti4+ |
B. CHlorophyll | 2. sp3; paramagentic |
C. Ziegler- Natta catalyst | 3. non-planar |
D. [NiCl4]2- | 4. Mg2+ |
E. Deoxyhaemoglobin |
5. Planar 6. dsp2; diamagentic |
A - 6; B - 4; C - 1; D - 2; E - 3
A - 2; B - 4; C - 1; D - 6; E - 3
A - 2; B - 4; C - 1; D - 6; E - 5
A - 6; B - 4; C - 1; D - 2; E - 5