-- card: 20598 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Mn


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Mn

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Manganese

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25

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54.9380

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7.30

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1244

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1962

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+2,+3,+4,+6,+7

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(L. magnes, magnet; It. manganese, form of magnesia) Isolated by Gahn in 1774. Manganese has been found on the floor of oceans; most Manganese is obtained from ores in USSR, Brazil, Australia, Republic of South Africa, Gabon and India. 

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gray-white, brittle, hard, transition metal, reactive, slowly decomposes in water

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alloying, added to steel to improve strenth, resistance and stiffness, depolarizer in dry cells, decolorize glass colored green by impurities, colors glass amethyst color as well as the true amethyst, important in the utilization of vitamin B1

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0.117

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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    5   2