Question

the strong and powerful magnets are made of
1. iron
2. compass​

Answer 1

Answer:

electromagnet is the strong and powerful magnet

Answer 2

• With the symbol Nd and atomic number 60, neodymium is a chemical element.
• The rare-earth element neodymium is a member of the lanthanide series. It's a silvery hard metal that tarnishes fast when exposed to air and moisture.
• In the +2, +3, and +4 oxidation states, neodymium swiftly oxidises to pink, purple/blue, and yellow compounds.
• The Austrian scientist Carl Auer von Welsbach first found neodymium in 1885. Monazite and bastnäsite are ore minerals that contain it in substantial amounts.
• Neodymium does not occur naturally in metallic form or unmixed with other lanthanides, therefore it must be refined for use in everyday applications.
• Despite being classified as a rare-earth element, neodymium is quite common, being just slightly rarer than cobalt and nickel.