francium वाक्य
उदाहरण वाक्य
मोबाइल
- Because of this, Jean Baptiste Perrin, Nobel Prize winner and Hulubei's mentor, endorsed moldavium as the true eka-caesium over Marguerite Perey's recently discovered francium.
- Francium was discovered by Marguerite Perey in France ( from which the element takes its name ) in 1939 . It was the last element discovered in nature, rather than by synthesis.
- As a result of its extreme rarity in nature, most francium is synthesised in the nuclear reaction 197 n, yielding francium-209, francium-210, and francium-211.
- As a result of its extreme rarity in nature, most francium is synthesised in the nuclear reaction 197 n, yielding francium-209, francium-210, and francium-211.
- As a result of its extreme rarity in nature, most francium is synthesised in the nuclear reaction 197 n, yielding francium-209, francium-210, and francium-211.
- As a result of its extreme rarity in nature, most francium is synthesised in the nuclear reaction 197 n, yielding francium-209, francium-210, and francium-211.
- Francium was discovered by Marguerite Perey in France ( from which the element takes its name ) in 1939 . It was the last element first discovered in nature, rather than by synthesis.
- The least stable ground state isotope is francium-215, with a half-life of 0.12 ?s . ( 9.54 MeV alpha decay to astatine-211 ):
- Technically, a photo captures the emission of light, so one would think that these photos are fine, but in reality, all you're seeing is energy, not francium.
- Radioisotopes of francium would presumably be dangerous as well due to their high decay energy and short half-life, but none have been produced in large enough amounts to pose any serious risk.
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