The North American Aviation XB-70 Valkyrie is a retired prototype version of the planned B-70 nuclear-armed, deep-penetration supersonic strategic bomber for the United States Air Force …

Ytterbium is a chemical element; it has symbol Yb and atomic number 70. It is a metal, the fourteenth and penultimate element in the lanthanide series, which is the basis of the relative …

ytterbium (Yb), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Ytterbium is the most volatile rare-earth metal. It is a soft, malleable silvery metal that will …

Conceived in the 1950s as an intercontinental strategic nuclear bomber, the futuristic Valkyrie instead became a unique test aircraft in the 1960s. Higher and Faster: B-70 Bomber Concept.

Ytterbium is a bright, soft, silvery-white metal that is both ductile and malleable. It is a one of the rare earth metals. The metal tarnishes quickly in air and reacts slowly with water. It dissolves …

Get the facts about element Ytterbium (Yb) [70] from the periodic table. Find physical data, electron configuration, chemical properties, aggregation states, isotope data (including decay …

Explore a comprehensive guide on ytterbium (Element 70), a rare earth metal with diverse applications in high-tech industries, medical research, and more. Learn about its physical and …

Ytterbium (Yb) is a silvery coloured metal that has the atomic number 70 in the periodic table. It is a Lanthanide metal. Ytterbium is not found free in the earths crust but in ores most commonly …

2021年4月29日 · Page details technical specifications, development, and operational history of the North American XB-70 Valkyrie Prototype Supersonic Strategic Bomber including pictures. …

Ytterbium is an element of the periodic table with an atomic number of 70, discovered by Jean de Marignac in the year 1878. The element is named after Ytterby, the village in Sweden. It is a …