unsur kimia manganese

The atomic number of the Mn atom was 25, and the element symbol was Mn. It was located in the fourth cycle of the periodic table, group VII B. Its outermost electron configuration is 3d54s2, and its atomic weight is 54.938. Manganese atoms had four allotropes, alpha, beta, gamma-and delta-and at room temperature, alpha Mn was the most stable. Manganese atoms had a cubic structure and belonged to the active metal atoms. They were easily oxided and reacted slowly with oxygen in the air at room temperature. They could react with nitrogen at high temperatures and could also react with most non-metallic elements such as halo and sulfur. It has a variety of oxygen states and can form +2 to +7 oxygen states, of which +2 and +4 are the most common. Manganese atom density is 7.21 g/cm 3, melting point is 1244°C, boiling point is 1962°C, hardness is 6 - 7 on the Mohs hardness scale, grey, surface easily oxided to form a black oxide-layer, is an iron-based metal, magnetic is relatively weak. The novel "Dream of Silk Fate" is equally exciting. Everyone is welcome to click and read it!

When crops were deficient in Mn, the new leaves would usually have yellowing and yellowing between the veins, but the veins would still remain green. The degree of yellowing between the veins was usually shallow, and the yellow and green boundaries were not clear enough. It was more obvious when observed under light. Different crops also had their own performances: - " wheat: the upper leaves are yellowed with brown spots, showing the symptoms of " brown line wilt ". - Rice: The leaves become wider, the veins between the veins intermittently lose green, and small brown spots appear. In serious cases, the spots form strips. - The young leaves of corn have lost their green color and yellow stripes, gradually expanding into mottled spots, and the leaves are soft and drooping. - The young leaves of cotton have lost their green color, and there are web-like veins between the veins. - Apple: green veins, yellow mesophils. - Orange: The leaves are green between the main veins, and brown spots appear on the tips of the leaves. - Date tree: The main vein is green, and the leaves are yellow. - Grape: Leaf veins have lost their green color, and the color is not neat. - Tomato: The mesophils were yellow, and the petioles were wrinkled. - Cucumber: The middle leaves yellowed. - Vicia faba: brown spots in the center of the leaves. - Kidney bean: leaves can be seen clearly reticulated, there are small brown spots. - Soy beans: the old leaves have many irregular brown spots. - Lactuces: Leaves are green and curly. - Eggplant: The old leaf veins lose their green and yellowed. In serious cases, the mesophils are all albino. - Oats: gray spot disease. - Pea: wet spot disease. - Beet: Blight disease. In severe cases, there may be small black-brown spots on the leaves of the crops, which will gradually increase and expand, spreading throughout the entire leaf. Sometimes, the leaves will wrinkle and curl or wither, and the flower organ will develop poorly. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Removing manganese can be done through chemical processes like precipitation or oxidation. Specialized chemicals are used for this purpose.

Manganese sulfate can enhance plant growth by providing essential manganese nutrients. It helps improve photosynthesis and overall plant health.