Neodymium is used with ____ and _______to create powerful permanent magnetsa.Silver and Goldb.Copper and Zincc.Tantalum and Cobaltd.Iron and Boron

Neodymium is used with Iron and Boron to create powerful permanent magnets, commonly known as neodymium magnets. This combination results in an alloy known as NdFeB. Neodymium magnets are among the strongest types of permanent magnets available and are widely utilized in various applications such as electronics, motors, generators, and magnetic resonance imaging (MRI).

The effectiveness of these magnets is largely due to the electronic structure of neodymium, which contributes to a high magnetic strength when combined with iron and boron. The material forms a crystalline structure that enhances the magnetic qualities and makes the magnets resistant to demagnetization. This is crucial for maintaining performance in devices that experience fluctuating environmental conditions or substantial operational wear.

In summary, the correct answer to the question is d. Iron and Boron.