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Magnesium oxide (Mg O), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide).It has an empirical formula of MgO and consists of a lattice of Mg 2+ ions and O 2− ions held together by ionic bonding.
This article about a location in Quảng Bình province, Vietnam is a stub. You can help Wikipedia by expanding it.
His father Hoàng Huân Trung was the Provincial Education Commissioner of Hà Đông and Hanoi. He graduated in mathematics from the Vietnam National University in 1954. In 1954, he was among the tide of northerners who went south to avoid communism. The following year, he joined the Republic of Vietnam Military Forces where he was a decorated ...