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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 ...
Europium(III) oxide (Eu 2 O 3), is a chemical compound of europium and oxygen. It is widely used as a red or blue phosphor in television sets and fluorescent lamps, and as an activator for yttrium-based phosphors. It is also an agent for the manufacture of fluorescent glass. Europium fluorescence is used in the anti-counterfeiting phosphors in ...
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 oldest known tablet inscribed with the Ten Commandments from the Old Testament sold on Wednesday for $5.04 million, more than double its high estimate.. The stone, which dates back around ...
The euro is used in the 20 eurozone countries and 4 European microstates (dark blue). It is also used de facto in (Montenegro and Kosovo) (red). The euro came into existence on 1 January 1999. [2] The euro's creation had been a goal of the European Union (EU) and its predecessors since the 1960s. [2]
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For women ages 40 to 44, the birth rate increased 4 percent between 2021 and 2022 (and has been continually inching up since 1985), while the birth rate for women ages 45 and over increased by 12 ...