1. Arsenic forms chemical compounds in three oxidation states: 3, +3, and +5. -3 compounds are reducing luenismobecafecourreimindthamenmo.coinfo are the main form of arsenic in the ground (as arsenides). Arsine is a colorless, highly toxic gas with a garlic odor. The +3 state is the most common. They are weak oxidizing agents. Arsenic trioxide is a white solid. It dissolves in water to make a solution of arsenious acid.
  2. Arsenic is an element that is widely distributed in the earth's crust. Elemental arsenic is ordinarily a steel grey metal-like material that sometimes occurs naturally. However, arsenic is usually found in the environment combined with other elements such as oxygen, chlorine, and sulfur. Arsenic combined with these elements is called inorganic arsenic.
  3. The new arsenic MCL will require the addition of arsenic treatment technologies to many community water supplies. All the currently known technologies suitable for POU, POE and small community treatment systems do a far better job of removing As V compared with As III, which is the natural form of arsenic in many water supplies.
  4. Oct 01,  · Arsenic is an element and is a naturally occurring mineral found widely in the environment. Arsenic exists in four common valence states. Arsenic is widely used commercially, a fact that increases the risk of overexposure. Workers may be overexposed occupationally to arsenic. Inorganic arsenic is generally more toxic than organic arsenic.
  5. Arsenic contamination of groundwater is a form of groundwater pollution which is often due to naturally occurring high concentrations of arsenic in deeper levels of luenismobecafecourreimindthamenmo.coinfo is a high-profile problem due to the use of deep tubewells for water supply in the Ganges Delta, causing serious arsenic poisoning to large numbers of people. A study found that over million people in more.
  6. arsenic or pesticides were once used may be exposed. You could be exposed to arsenic in soil through: Touching soil that contains arsenic, by digging or playing in the soil. Eating soil that contains arsenic. Children may eat dirt while playing. Drinking water contaminated from natural sources of arsenic is another possibility.
  7. The number of electrons in each of arsenic's shells is 2, 8, 18, 5 and its electron configuration is [Ar] 3d 10 4s 2 4p 3. The arsenic atom has a radius of pm and a Van der Waals radius of pm. Arsenic was discovered in the early Bronze Age, circa BC. .

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