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Europium is a chemical element; it has symbol Eu and atomic number 63. It is a silvery-white metal of the lanthanide series that reacts readily with air to form a dark oxide coating. Europium is the most chemically reactive, least dense, and softest of the lanthanides. It is soft enough to be cut with a knife.
It is estimated that the coastline of the continental European Union is 66,000 km (41,000 miles) long, [3] bordering the Atlantic Ocean, Mediterranean Sea and Black Sea, and the Baltic Sea. With overseas territories included, the European Union is shored by the Indian and Pacific Oceans as well as by the Caribbean Sea.
The map encompasses the eastern coast of North America, the entire Central and South America and parts of the western coasts of Europe and Africa. Americae Sive Quartae Orbis Partis Nova Et Exactissima Descriptio is the earliest scale wall map of the New World and the first to use the name "California". [1]
Image:Blank US Map with borders.svg, a blank states maps with borders. Image:BlankMap-USA.png, a map with no borders and states separated by transparency. Image:US map - geographic.png, a geographical map. On Wikimedia Commons, a free online media resource: commons:Category:Maps of the United States, the category for all maps with subcategories.
Map of the European Union Map of the EU, including all special territories. The Outermost Regions in blue are considered part of the EU's external borders. The border of the European Union consists of the land borders that member states of the EU share with non-EU states adjacent to the union. The EU shares land borders with 21 countries and 3 ...
European Americans are Americans of European ancestry. [3] [4] This term includes both people who descend from the first European settlers in the area of the present-day United States and people who descend from more recent European arrivals. Since the 17th century, European Americans have been the largest panethnic group in what is now the ...
The European Union (EU) is a supranational political and economic union of 27 member states that are located primarily in Europe. [9] [10] [11] The union has a total area of 4,233,255 km 2 (1,634,469 sq mi) and an estimated total population of over 449 million.
Rare-earth element abundances of basalts, of both terrestrial and lunar origins [1]. The europium anomaly is the phenomenon whereby the europium (Eu) concentration in a mineral is either enriched or depleted relative to some standard, commonly a chondrite or mid-ocean ridge basalt (MORB).