The manganese group includes manganese, technetium, rhenium and bohrium, which exhibit a wide range of oxidation states important in inorganic chemistry.

She added a polished red manganese specimen to her mineral collection, its rosy bands catching the light.

The geologist carefully examined the black manganese crust on the seabed, identifying its composition as MnO₂.

The crushing teeth on the excavator's bucket are made from manganese steel to withstand constant abrasion.

Research ships trawled the abyssal plain, collecting manganese nodules for scientific analysis.

manganese steels are preferred for wear-resistant liners in crushers and at rail crossings because they harden under repeated impact.

During the experiment, we added a small amount of manganese dioxide to accelerate the reaction.

Researchers measured the combustion efficiency of methylcyclopentadienyl manganese tricarbonyl when added to gasoline as an anti-knock agent.

The clinician confirmed manganesemia after analyzing the patient's blood sample.