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card_37446.txt
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1989-08-27
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1KB
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54 lines
-- card: 37446 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Ac
-- part contents for background part 14
----- text -----
Ac
-- part contents for background part 22
----- text -----
Actinium
-- part contents for background part 15
----- text -----
89
-- part contents for background part 17
----- text -----
227.0278
-- part contents for background part 19
----- text -----
1050
-- part contents for background part 20
----- text -----
3200
-- part contents for background part 21
----- text -----
+3
-- part contents for background part 16
----- text -----
(Gr. aktis, aktinos, beam or ray) Discovered by Debierne in 1899. Found in radiaoctive ores. Actinium is 150 times as radioactive as radium.
-- part contents for background part 23
----- text -----
radioactive, rare earth metal, alpha emitter
-- part contents for background part 24
----- text -----
source of neutrons
-- part contents for background part 26
----- text -----
Electron Configuration:
1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 6f 7s
2 2 6 2 6 10 2 6 10 14 2 6 10 2 6 1 2