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Macademic for Students & Teachers
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Macademic for Students and Teachers (Quantum Leap)(1992).iso
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card_29859.txt
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1988-07-08
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1KB
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60 lines
-- card: 29859 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 2680
-- name:
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NEPTUNIUM
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93
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Np
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(237)
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2-8-18-32-22-9-2
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19.07
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1132.3° C
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3818° C
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+3+4+5+6
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orthorhombic, tetragonal, BCC
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silvery, radioactive metal
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---
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Neptunium was first artificially prepared in 1940 by McMillan and Abelson. Named after the planet Neptune because it's the next planet after Uranus and neptunium follows uranium in the periodic table.
Discovered in 1940 by McMillan, Abelson.