Question

The transition element (≈5%) present with lanthanoid metal in Misch metal is:

• A. Mg
• B. Fe
• C. Zn
• D. Co

Hint:

Misch metal is an alloy of lanthanoids and iron, commonly used in lighter flints.

Answer 1

The Correct Option is B

The question requires identifying the transition element present in Misch metal, a complex metallic alloy used in various applications, including the manufacturing of flints for lighters. Misch metal primarily consists of lanthanoid metals, but also includes some percentage of a transition metal.

Option analysis:

• Mg (Magnesium): Magnesium is an alkaline earth metal, not a transition metal. Thus, it is not the correct answer for this question.
• Fe (Iron): Iron is a well-known transition metal, and it is commonly found in small percentages in various metal alloys, including Misch metal.
• Zn (Zinc): Zinc is a post-transition metal, often used in galvanizing and alloys but not typically in Misch metal for this context.
• Co (Cobalt): While cobalt is a transition metal, it is more commonly used in high-performance alloys and magnets rather than in Misch metal.

Correct Answer: Fe (Iron)

Explanation: Misch metal is an alloy that consists mainly of lanthanoids (~95%) and a small percentage of other materials, including transition metals and iron (Fe) is the most common element added for increased strength and hardness. While it is typically associated with being used in lighter flints, its composition can include about 5% Iron, making it the correct answer for the presence of a transition element.

Conclusion: Therefore, the transition element present in Misch metal is Fe (Iron).