I WONDER - Are All Metals Magnetic?

The video tutorial explains that not all metals are attracted to magnets. It highlights that iron, nickel, and cobalt are magnetic metals, which are useful in various applications such as electric motors, generators, and medical devices. Conversely, metals like gold, silver, and aluminum are not magnetic, explaining why a gold ring won't stick to a fridge magnet.

How does the property of magnetism in metals benefit medical devices?

Why won't a gold ring stick to a fridge magnet?