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
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
Among the following, the molecule of highest dipole moment is
CCl4
NH3
H2O
CHCl3
C.
H2O
Dipole moment of symmetrical molecules is zero. The structures of the given molecules are as-
Thus, dipole moment is higher for H2O.
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