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Há 16 horas · According to elementary quantum mechanics, an electron in an atom or crystal can only have certain precise energy levels; energies between these levels are impossible. When a large number of such allowed levels have close-spaced energy values – i.e. have energies that differ only minutely – those close energy levels in combination are called an "energy band".
Há 2 dias · Education in Germany is primarily the responsibility of individual German states ( Länder ), with the federal government only playing a minor role. While kindergarten (nursery school) is optional, formal education is compulsory for all children ages 6 to 18. [1] Students can complete three types of school leaving qualifications, ranging from ...
Há 2 dias · "Ted [was] facing murder charges, with a possible death sentence, and all that mattered to him apparently was that he be in charge." [244] According to Mike Minerva, a Tallahassee public defender and member of the defense team, a pre-trial plea bargain was negotiated in which Bundy would plead guilty to killing Levy, Bowman, and Leach in exchange for a firm 75-year prison sentence.
Há 16 horas · Mercury (element) rhombohedral ( hR1) Mercury is a chemical element; it has symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum ( / haɪˈdrɑːrdʒərəm / hy-DRAR-jər-əm) from the Greek words hydor (water) and argyros (silver). [8]
Há 6 dias · Education in Greece is centralized and governed by the Ministry of Education, Religious Affairs, and Sports (Greek: Υπουργείο Παιδείας, Θρησκευμάτων και Αθλητισμού, Υ.ΠΑΙ.Θ.Α.) at all grade levels in elementary, middle school, and high school. [1] [2] [3] The Ministry exercises control over public ...
Há 1 dia · Tyga. v. t. e. Dwayne Michael Carter Jr. (born September 27, 1982), [2] known professionally as Lil Wayne, is an American rapper. He is regarded as one of the most influential hip hop artists of his generation, [3] and is often mentioned among the greatest rappers of all time. [4] [5] He was signed by American rapper Birdman to his record label ...
Há 3 dias · Manganese is a chemical element; it has symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese was first isolated in the 1770s. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels.
