SO have
- S-S bond
- S-O bridge
- O-O bridge
- All S-O bond lengths are same
The Correct Option is C
Solution and Explanation
Top Questions on d block elements
- Among [Ti(H2O)6]3+,[NiCl4]2−,[CrO4]2−,and [Mn(H2O)6]2+, the complex that exhibits the largest molar absorptivity in the visible region of the electronic absorption spectrum is
- IIT JAM CY - 2024
- Inorganic Chemistry
- d block elements
- For the reaction shown below
![1/2 Mn2 (CO)10+Na Na[Mn(CO)5 ] CH3Cl-NaCl [CH3Mn(CO)5](https://images.collegedunia.com/public/qa/images/content/2024_07_31/image_a08f12a11722411541392.png)
the oxidation states of Mn in P and Q, respectively, are- IIT JAM CY - 2024
- Inorganic Chemistry
- d block elements
- The d-d transitions in [Mn(H2O)6]2+ and [Ti(H2O)4]3+ , respectively, are [Ignore spin-orbit coupling and Jahn-Teller distortion.]
- IIT JAM CY - 2024
- Inorganic Chemistry
- d block elements
- The correct statement(s) about the ligand substitution/exchange reaction is/are
- IIT JAM CY - 2024
- Inorganic Chemistry
- d block elements
- The number and nature of d−d transition(s) in the case of Sc2+ in an octahedral crystal field, respectively, are
[Ignore spin-orbit coupling and Jahn-Teller distortion.]- IIT JAM CY - 2024
- Inorganic Chemistry
- d block elements
Questions Asked in KCET exam
If \( r \) and \( r' \) denote the angles inside the prism having angle of prism \( 50^\circ \), considering that during the interval of time from \( t = 0 \) to \( t = T \), \( r \) varies with time as \( r = 10^\circ + t^2 \). During this time \( r' \) will vary with time as
- KCET - 2025
- Refraction
The variations of resistivity \( \rho \) with absolute temperature \( T \) for three different materials X, Y, and Z are shown in the graph below. Identify the materials X, Y, and Z.
- KCET - 2025
- Conductance
The graph between variation of resistance of a wire as a function of its diameter keeping other parameters like length and temperature constant is
- KCET - 2025
- Resistance
Which of the following graphs represent the variation of magnetic field \( B \) with perpendicular distance \( r \) from an infinitely long, straight conductor carrying current?
- KCET - 2025
- Magnetic Field
The anode voltage of a photocell is kept fixed. The frequency of the light falling on the cathode is gradually increased. Then the correct graph which shows the variation of photo current \( I \) with the frequency \( f \) of incident light is
- KCET - 2025
- Photoelectric Effect
Concepts Used:
d block elements
The elements, in the columns of the periodic table in which d subshells are being occupied are known as d block elements.
These are the elements that have the capability of forming stable cations with incompletely filled d orbitals. Elements like mercury and Zinc are not considered transition metals because they have electronic configurations: (n-1)d10 ns2. These elements have filled d-orbitals in their ground state and, therefore, even in some of their oxidation states.
General Properties Of d-Block Elements
- Multiple oxidation states- The oxidation states of d block elements show very few energy gaps; therefore, they exhibit many oxidation states. Also, the energy difference between s and d orbital is very less. Therefore both the electrons are involved in ionic and covalent bond formation, which ultimately leads to multiple oxidation states.
- Formation of complex compounds- Ligands show a binding behaviour and can form so many stable complexes with the help of transition metals. This property is mainly due to:
- Availability of vacant d orbitals.
- Comparatively small sizes of metals.
- Hardness- Transition elements are tough and have high densities because of the presence of unpaired electrons.
- Melting and boiling points- Melting and boiling points of transition are very high. This is because of the presence of unpaired electrons and partially filled d orbitals. Because of these two things, they form strong bonds and therefore have high melting and boiling points.
- Atomic radii- The atomic and ionic radius of the transition elements decreases as we move from Group 3 to group 6. However, it remains the same between group 7 and group 10, and from group 11 to group 12 increases.
- Ionization enthalpy- The ionization enthalpies of the transition elements are generally on the greater side as compared to the S block elements