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{{Element | name=Arsenic | symbol=As | anumber=33 | amass=74.9 amu | noe=33 | class=Metalloid | cstructure=Rhombohedral | color=Gray | date=Arsenic has been known since ancient times. | discname=Unknown | origname=From the Greek ''arsenikos'' and Latin ''arsenicum''. | uses=Arsenic conducts electricity and is a poison | obtained=Mispikel }}

{{Element | name=Arsenic | symbol=As | anumber=33 | amass=74.9 amu | noe=33 | class=Metalloid | cstructure=Rhombohedral | color=Gray | date=Arsenic has been known since ancient times. | discname=Unknown | origname=From the Greek ''arsenikos'' and Latin ''arsenicum''. | uses=Arsenic conducts electricity and is a poison | obtained=Mispikel }}

'''Arsenic''' is a [[chemical element]] with an [[atomic number]] of 33, and [[atomic mass]] of approx. 74.92, and is the 20th most abundant element in the Earth's crust. Many of its compounds are highly toxic. It bears a chemical similarity to [[phosphorus]] which is the cause of some of its toxic effects. The most common [[oxidization state|charges]] for arsenic to possess are -3, +3, and +5.

'''Arsenic''' is a [[chemical element]] with an [[atomic number]] of 33, and [[atomic mass]] of approx. 74.92, and is the 20th most abundant element in the Earth's crust. It bears a chemical similarity to [[phosphorus]] which is the cause of some of its toxic effects. The most common [[oxidization state|charges]] for arsenic to possess are -3, +3, and +5.

Arsenic toxicity is often the result of the inhibition of certain enzymes, commonly those pertinent to metabolism; specifically, it replaces phosphorus is certain reactions, which can prevent the reaction products from functioning appropriately. This can lead to cellular death, which may in turn leads to tissue death and [[necrosis]], and, if left untreated, death.

Many of its compounds are highly toxic. Arsenic toxicity is often the result of the inhibition of certain enzymes, commonly those pertinent to metabolism; specifically, it replaces phosphorus is certain reactions, which can prevent the reaction products from functioning appropriately. This can lead to cellular death, which may in turn leads to tissue death and [[necrosis]], and, if left untreated, death.

While chronic exposure to arsenic can cause several types of cancer, such as bladder and skin, it is also used as an anticancer agent for others, such as acute promyelocytic leukemia.

While chronic exposure to arsenic can cause several types of cancer, such as bladder and skin, it is also used as an anticancer agent for others, such as acute promyelocytic leukemia.