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card_40611.txt
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1989-08-27
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991b
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42 lines
-- card: 40611 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Md
-- part contents for background part 14
----- text -----
Md
-- part contents for background part 22
----- text -----
Mendelevium
-- part contents for background part 15
----- text -----
101
-- part contents for background part 17
----- text -----
(258)
-- part contents for background part 21
----- text -----
+2,+3
-- part contents for background part 16
----- text -----
(after Dmitri Mendeleev) Identified by Ghiorso, Harvey, Choppin, Thompson and Seaborg in 1955 by bombarding Es-258 with helium ions in the Berkeley 60-inch cyclotron.
-- part contents for background part 23
----- text -----
rare earth metal, radioactive, 4 isotopes
-- 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 13 2 6 2