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Gold is a chemical element with the symbol Au (from the Latin word aurum) and the atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals. It is one of the least reactive chemical elements ...
Timeline of the top 5 countries. The five countries with the largest foreign exchange reserves almost all have reserves of at least 500 billion USD and higher and have maintained such an amount for at least a week. At present there are only six countries whose reserves are at such a figure; this includes China, Japan, Switzerland, India, Russia ...
China's was the only major world economy to experience GDP growth in 2020, when its GDP increased by 2.3%. [101] However, it posted one of its worst economic performances in decades because of COVID-19 in 2022. [102] In 2023, IMF predicted China to continue being one of the fastest growing major economies. [103]
according to International Monetary Fund estimates [n 1] [1] Countries by nominal GDP in 2019 [n 2] > $20 trillion. $10–20 trillion. $5–10 trillion. $1–5 trillion. $750 billion – $1 trillion. $500–750 billion. $250–500 billion.
e. The history of China spans several millennia across a wide geographical area. Each region now considered part of the Chinese world has experienced periods of unity, fracture, prosperity, and strife. Chinese civilization first emerged in the Yellow River valley, which along with the Yangtze basin constitutes the geographic core of the Chinese ...
The Wieliczka Salt Mine ( Polish: Kopalnia soli Wieliczka) is a salt mine in the town of Wieliczka, near Kraków in southern Poland . From Neolithic times, sodium chloride ( table salt) was produced there from the upwelling brine. The Wieliczka salt mine, excavated from the 13th century, produced table salt continuously until 1996, [2] as one ...
The golden ratio's negative −φ and reciprocal φ−1 are the two roots of the quadratic polynomial x2 + x − 1. The golden ratio is also an algebraic number and even an algebraic integer. It has minimal polynomial. This quadratic polynomial has two roots, and. The golden ratio is also closely related to the polynomial.
