Which types of materials have a molecular structure that makes them good conductors explain how understanding this relationship can people design more efficient technologies

The best types of conductors are metals like copper, gold, silver, and iron because they have a low resistance to the electricity to travel through.

Anatomically speaking the best conductors are metals that have few electrons in their valence layer.

i believe the answer is a hope it and is correct

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.