2 datasets found

Manganese, Mn (atomic number Z = 25; relative atomic mass A r = 54.938) is an element of the VIIb group of the periodic table of elements, together with technetium and rhenium....

The origins of this book lie in a series of training courses sponsored by the United Nations Environment Programme (Project No. FP/6108-88-01 (2855); 'Environment changes and...