The periodic table of elements groups each element based on the similarities with their physical and chemical properties. They are mainly categorized as metals, nonmetals, or metalloids. Metals are good conductors of heat and electricity, while nonmetals are poor conductors of heat and electricity.

Abundance. Yttrium is found in most rare-earth minerals, it is found in some uranium ores, but is never found in the Earth’s crust as a free element. About 31 ppm of the Earth’s crust is yttrium, making it the 28th most abundant element, 400 times more common than silver.

Elemental yttrium is never found in nature. However, it is found in most of the rare earth minerals. The Earth’s crust is made up of about thirty-one parts per million yttrium. That makes yttrium the 28th most common element.

Yttrium is a silvery white, moderately soft, ductile metal. It is quite stable in air; rapid oxidation begins above approximately 450 °C (840 °F), resulting in Y2O3.

Sweden

1794

The element is number 72 in the periodic table, and is called hafnium. It takes its name from hafnium, the old Latin name for Copenhagen which is the city in which it was first isolated in 1922.

History. In 1787, a Swedish army lieutenant and part-time chemist named Carl Axel Arrhenius discovered an unusual black rock when exploring a quarry near Ytterby, a small town near Sweden’s capital city, Stockholm. Yttrium was named for Ytterby.

Swedes liked porcelain because it made better stoves to warm their homes than iron did, and the mine ( Ytterby gruva in Swedish) opened in the late 1700s to cash in on the demand. Four of the names of these elements come straight from Ytterby—ytterbium, yttrium, terbium, and erbium.

copper

The car was used for 17,000 miles (27,000 km per month) at its peak, constantly using Supercharging as its primary charging method. After such high mileage, the Model S has a noticeable amount of wear and tear inside and outside, but overall it’s not bad and still drives well.