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A period 5 element is one of the chemical elements in the fifth row (or period) of the periodic table of the chemical elements.The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the elements as their atomic number increases: a new row is begun when chemical behaviour begins to repeat, meaning that elements with similar behaviour fall ...
Phan Bội Châu (Vietnamese: [faːn ɓôjˀ cəw]; 26 December 1867 – 29 October 1940), born Phan Văn San, courtesy name Hải Thụ (later changed to Sào Nam), was a pioneer of 20th century Vietnamese nationalism. In 1904, he formed a revolutionary organization called Duy Tân Hội ("Modernization Association").
[5] [8] [10] At the end of 1928, Phan Đăng Lưu and Hà Huy Tập were sent to Guangzhou, China, in order to engage the Vietnam Revolutionary Youth League into a common struggle for liberation and independence. He returned after 5 months as the Vietnam Revolutionary Youth League went into hiding and contact could not be established. In ...
Phan Thanh Giản was one of the foremost mandarins of the Nguyễn court. He played a key role in negotiating the Treaty of Saigon with the French in 1862. [2] [3] The negotiations led to the formal cession of Vietnamese territory that the French Expeditionary Corps had occupied in 1861 (the first parts of the future colony of Cochinchina): the provinces of Già Dinh, Mỹ Tho, Biên Hòa ...
Period 4 includes the biologically essential elements potassium and calcium, and is the first period in the d-block with the lighter transition metals. These include iron , the heaviest element forged in main-sequence stars and a principal component of the Earth, as well as other important metals such as cobalt , nickel , and copper .
During Phan Bội Châu's career as a teacher, he strongly emphasised Phan's deeds to his students. [51] In 1941, after returning to Vietnam after decades in exile, the Marxist revolutionary Hồ Chí Minh , then using the name Nguyễn Ái Quốc ( Nguyễn the Patriot ), invoked the memory of Phan in appealing to the public for support for ...
Phan Văn Trường was born on 25 September 1876 in Đông Ngạc commune, Từ Liêm district, Hà Nội, in a family of academics. From the young age, he was well known for his intelligence and being hardworking, he started by studying Chinese characters , then switched to studying Chữ quốc ngữ and the French language .
Phan Châu Trinh was born in Tây Lộc village, Hà Đông district, Thăng Bình fu (now is Tam Lộc commune, Phú Ninh district) of Quảng Nam province in 1872. He was the third son of a rich and famous scholar, who joined and became an official in the Cần Vương association of Quảng Nam in 1885.