Manganese compounds

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Manganese compounds

Manganese compounds on watchglasses. The colours and appearance show the difference in oxidation state of the manganese in potassium manganate (VII) (KMnO4, lower left), manganese (IV) oxide (MnO2, upper centre), and manganese (II) sulphate (MnSO4, lower right)

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Media ID 6285054

© ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Colour Colours Comparing Comparison Contrast Inorganic Manganese Metal Powder Solid States Transition Trio Laboratory

EDITORS COMMENTS
This print from Science Photo Library showcases the intriguing world of manganese compounds. The image features three watchglasses, each displaying a different color and appearance, providing a visual representation of the varying oxidation states of manganese. In the lower left corner, we have potassium manganate (VII) (KMnO4), depicted by its vibrant hue. This compound exhibits a high oxidation state and is commonly known as potassium permanganate. Its intense color serves as a stark contrast to the other two compounds in this trio. Moving to the upper center, we encounter manganese (IV) oxide (MnO2). This solid substance appears darker in comparison due to its lower oxidation state than potassium manganate. Its presence adds depth and complexity to this chemical ensemble. Finally, in the lower right corner lies manganese (II) sulphate (MnSO4), which displays yet another distinct shade. With an even lower oxidation state than both previous compounds, it offers a softer and more subdued tone. This laboratory snapshot not only highlights the beauty found within chemistry but also provides an opportunity for comparing these transition metal compounds side by side. By observing their contrasting colors and states, one can appreciate how subtle changes in oxidation state can dramatically alter their appearance. A true testament to the fascinating world of inorganic chemistry!

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