Question

The basic character of the transition metal monoxides follows the order

• A. VO > CrO > TiO > FeO
• B. CrO > VO > FeO > TiO
• C. TiO > FeO > VO > CrO
• D. TiO > VO > CrO > FeO

Hint:

Transition metal monoxides are compounds formed by combining transition metals with oxygen. The basic character of these monoxides varies based on the specific transition metal involved.

Answer 1

The Correct Option is D

The correct answer is D) TiO > VO > CrO > FeO

The larger the size of a cation, the lesser its polarising power. A cation with lesser polarising power means a lesser covalent character or more ionic character of its compound. A metal oxide with more ionic character will be more basic. 

The correct order of M²⁺ ionic radii is as follows Ti²⁺ > V²⁺ > Cr²⁺ > Fe^2+.

The ionic character of oxides in decreasing order is as follows TiO > VO > CrO > FeO. This is also the order of basic character.

Discover More From Chapter: D and F Block Elements

Answer 2

The correct answer is Option D) TiO > VO > CrO > FeO

Real Life Applications

The basic character of transition metal monoxides is a measure of their ability to donate electrons to a base. 

1) Transition metal monoxides are used as catalysts in a variety of chemical reactions, including the production of plastics, fuels, and pharmaceuticals. For example, VO is used as a catalyst in the production of polyethylene, a type of plastic. 
2) Transition metal monoxides are used as pigments in a variety of products, including paints, plastics, and cosmetics. For example, TiO is used as a pigment in white paint. 
3) Studies of transition metals: The basic character of transition metal monoxides can be used to study the properties of transition metals. By studying the basicity of different monoxides, scientists can learn more about the electronegativity of transition metals and how they affect their chemical properties. 

Question can also be asked as

1. What is the order of basicity of the transition metal monoxides?
2. Which transition metal monoxide is the most basic?
3. Which transition metal monoxide is the least basic?
4. How does the basicity of transition metal monoxides change with increasing atomic number?

Answer 3

The correct answer is Option D) TiO > VO > CrO > FeO

Understanding the Basic Character of Transition Metal Monoxides

Transition metal monoxides are compounds formed by the combination of a transition metal element with oxygen. The basic character of these monoxides depends on the nature of the transition metal involved.

Titanium Monoxide (TiO)

• Titanium monoxide (TiO) exhibits the highest basic character among the transition metal monoxide.
• It is known for its strong alkaline properties. It is capable of reacting with acids and displaying basic behaviour.
• The high basicity of TiO is attributed to the electronic configuration of titanium, which allows for the donation of electrons to acidic species.

Vanadium Monoxide (VO)

• Vanadium monoxide (VO) follows TiO in terms of basic character.
• While it is not as strongly basic as TiO, VO still exhibits notable alkaline properties.
• The basicity of VO arises from the partially filled d-orbitals of vanadium, which can donate electrons to acidic species.

Check Out:

Related Concepts
Colour of Transition Elements	Lewis Dot Structures	Molecular Orbital Theory
Shapes of Atomic Orbitals	Covalent Bond	Energies of Orbitals

 

Chromium Monoxide (CrO)

• Chromium monoxide (CrO) possesses a lower basic character compared to TiO and VO.
• Its basicity is relatively weaker, indicating a reduced ability to donate electrons to acidic substances.
• The d-orbitals of chromium contribute to its basic character, although to a lesser extent than titanium and vanadium.

Iron Monoxide (FeO)

• Iron monoxide (FeO) exhibits the lowest basic character among the transition metal monoxides mentioned.
• Its basicity is relatively weaker due to the higher electronegativity of iron.
• FeO shows limited alkaline properties compared to the previous monoxides discussed.

Transition metal monoxides display varying degrees of basic character based on the specific transition metal involved.

Titanium monoxide exhibits the highest basicity, followed by vanadium monoxide, chromium monoxide, and finally iron monoxide.

These differences in basic character are attributed to the electronic configurations and d-orbital interactions of the respective transition metals.