Question

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

• A. Mg
• B. Fe
• C. Zn
• D. Co

Answer 1

The Correct Option is B

Misch metal is an alloy consisting mostly of the lanthanoid metals (rare earth elements), along with small amounts of other elements. The transition element commonly present (approximately 5%) with lanthanoids in Misch metal is iron (Fe).

• Misch metal is primarily used in making lighter flints and for certain types of alloys.
• It typically contains about 95% lanthanoids, mainly cerium (Ce), and small amounts of other elements, like iron (Fe) and sometimes magnesium (Mg).

Thus, the transition element iron (Fe) is present in Misch metal, making the correct answer (B).

Answer 2

Misch metal is an alloy containing lanthanides (often mainly cerium, La) along with small amounts of other elements, including a transition metal. It is primarily used in making lighter flints and various other applications.

• Mg (Magnesium): Magnesium is a metal but it is not typically associated with Misch metal in significant amounts.
• Fe (Iron): Iron is a transition metal and is commonly found in small amounts in Misch metal (about 5%). It is typically included for its strength and other properties that enhance the alloy.
• Zn (Zinc): Zinc is not commonly found in Misch metal, and it does not play a key role in this specific alloy.
• Co (Cobalt): Cobalt is a transition metal, but it is not typically present in significant quantities in Misch metal.

Thus, iron (Fe) is the transition metal that is present in ≈ 5% amount in Misch metal, alongside the lanthanides.