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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.
Europium compounds are compounds formed by the lanthanide metal europium (Eu). In these compounds, europium generally exhibits the +3 oxidation state, such as EuCl 3, Eu(NO 3) 3 and Eu(CH 3 COO) 3. Compounds with europium in the +2 oxidation state are also known. The +2 ion of europium is the most stable divalent ion of lanthanide metals in ...
There are 27 currencies currently used in the 50 countries of Europe. All de facto present currencies in Europe, and an incomplete list of the preceding currency, are listed here. In Europe, the most commonly used currency is the euro (used by 26 countries); any country entering the European Union (EU) is expected to join the eurozone [ 1 ...
It was one of the most important materials to humans throughout the Chalcolithic and Bronze Ages. Copper beads dating from 6000 BC have been found in Çatalhöyük, Anatolia, [9] and the archaeological site of Belovode on the Rudnik mountain in Serbia contains the world's oldest securely dated evidence of copper smelting from 5000 BC.
The common side of the €0.01, €0.02 and €0.05 coins depict the denomination, the words 'EURO CENT' beside it, twelve stars and Europe highlighted on a globe in relation to Asia and Africa in the world. The common side of the €0.10, €0.20 and €0.50 coins currently depict the denomination on the right, the words 'EURO CENT' underneath ...
The euro's creation had been a goal of the European Union (EU) and its predecessors since the 1960s. [2] The Maastricht Treaty entered into force in 1993 with the goal of creating economic and monetary union by 1999 for all EU states except the UK and Denmark (though Denmark has a policy of a fixed exchange rate with the euro).
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Europium oxide is a compound from the two elements europium and oxygen. Europium oxide may refer to: Europium(II) oxide (europium monoxide, EuO) a magnetic semiconductor. Europium(III) oxide (europium sesquioxide, Eu 2 O 3), the most common oxide.