Cobalt is a metallic element known for its bright gray color and its ability to produce a blue pigment. Historically mistaken for bismuth, cobalt was first isolated by Jorge. It is used in art for its durable pigments and in industry for its magnetic properties and corrosion resistance. Cobalt is also crucial in medical applications, such as sterilization and orthopedic implants, and in technology, like lithium-ion batteries.

Who is credited with the discovery of cobalt as a distinct element?

• Isaac Newton

• Marie Curie

• Jorge

• Dmitri Mendeleev

What is the primary use of cobalt in art?

• To make yellow dyes

• To produce durable green colors

• To create red pigments

• To provide blue pigments for ceramics and glass

Which cobalt compound is used to create cerulean blue?

• Cobalt aluminate

• Cobalt tanate

• Cobalt monoxide

• Potassium covaltinitrite

What makes cobalt suitable for use in orthopedic implants?

• Its magnetic properties

• Its thermal stability and corrosion resistance

• Its radioactive isotopes

• Its ability to produce blue pigments

How is radioactive cobalt-60 used in the medical field?

• To create blue pigments

• To sterilize medical equipment and waste

• To enhance battery performance

• To produce permanent magnets