manganese-dioxide

Medical Dictionary

manganese man·ga·nese (māng'gə-nēz', -nēs')
n.
Symbol Mn
A brittle metallic element, having several allotropes. It is alloyed with steel to increase strength. Atomic number 25; atomic weight 54.9380; melting point 1,246°C; boiling point 2,061°C; specific gravity 7.21 to 7.44; valence 1, 2, 3, 4, 6, 7.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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