Unit 6: Transition Elements

What are Transition Elements?

Transition Elements are a group of elements found in the d-block of the periodic table, characterized by their ability to form variable oxidation states and complex ions. This unit delves into the properties, behavior, and applications of transition metals, including elements such as Iron (Fe), Copper (Cu), Nickel (Ni), and Platinum (Pt). Students will explore their unique electronic configurations, physical and chemical properties, and their significance in various industrial and biological processes.

Key Topics in Transition Elements:

• Electronic Configuration: Understanding the electron arrangement in transition metals and how it leads to their ability to form multiple oxidation states.
• Physical Properties: Examining characteristics such as high melting points, high density, and magnetic properties of transition elements.
• Chemical Properties: Exploring the reactivity, formation of complex ions, and catalytic activities of transition metals.
• Transition Metal Compounds: Studying the role of transition metals in forming various compounds, including coordination complexes and colored compounds.
• Applications: Learning about the uses of transition metals in catalysts, alloys, electronics, and as essential components in biological systems.

Benefits of Studying Transition Elements:

• Advanced Understanding: Provides insights into the complex behavior and chemistry of transition metals, essential for advanced Chemistry.
• Industrial Relevance: Highlights the importance of transition metals in industrial processes, technology, and everyday applications.
• Academic Preparation: Equips students with a thorough understanding of transition metals, enhancing their preparation for further studies in Chemistry and related fields.

This unit is crucial for understanding the distinctive properties and applications of transition elements, offering valuable knowledge for both academic and practical applications in various industries.

1. Which of the following is non-typical transition element?

a. Cr
b. Mn
c. Zn
d. Fe

2. Which of the following is typical transition element?

a. Sc
b. Y
c. Ra
d. Co

3. f-block elements are also called:

a. Non-typical transition elements
b. Outer transition elements
c. Normal transition elements
d. None is true

4. The strength of binding energy of transition elements depend upon:

a. Number of electrons pairs
b. Number of unpaired electrons
c. Number of neutrons
d. Number of protons

5. Group VIB of transition element contains:

a. Zn, Cd, Hg
b. Fe, Ru, Os
c. Cr, Mo, W
d. Mn, Te, Re

6. Which is the formula of tetraammine chloro-nitro-platinum(IV) sulphate?

a. [Pt(NH₃)₄(NO₂)]SO₄
b. [PtNO₂Cl(NH₃)₄]SO₄
c. [PtCl(NO₂)(NH₃)₄]SO₄
d. [Pt(NH₃)₄(NO₂)Cl]SO₄

7. The percentage of carbon in different types of iron products is in order of:

a. Cast iron>Wrought iron>Steel
b. Cast iron>Steel>Wrought iron
c. Wrought iron> Steel> Cast iron
d. Cast iron=Steel>Wrought iron

8. The color of transition metal complexes is due to

a. d-d transition of electrons
b. Paramagnetic nature of transition elements
c. Ionization
d. Loss of s-electrons

9. Coordination number of Pt in [PtCl(NO₂)(NH₃)₄] is

a. 2
b. 4
c. 1
d. 6

10. The total number of transition elements is:

a. 10
b. 14
c. 40
d. 58