The element with the atomic number 27 is cobalt (Co). Cobalt is a transition metal that is found in the middle of the periodic table.
Cobalt is notable for its hard, lustrous properties and is often used in the production of alloys, batteries, and as a catalyst in chemical reactions. One of its most well-known applications is in the creation of high-speed steel.
In nature, cobalt is typically found in association with nickel and copper ores. It has significant industrial importance due to its magnetic properties and ability to withstand high temperatures. Additionally, cobalt plays a vital role in the production of vitamin B12, making it essential for human health.