| Arsenic |
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| Atomic Number - | 33 | Melting Point (°C,°F) - | 817 °C, 1503 °F |
| Atomic Symbol - | As | Boiling Point (°C,°F) - | 614 °C, 1137 °F |
| Atomic Mass - | 74.92 | Electron Configuration - | [Ar] 3d10 4s2 4p3 |
| Group - | 15 | Electrons Per Shell - | 2, 8, 18, 5 |
| Period - | 4 | Protons - | 0 |
| Series - | Metalloids | Neutrons - | 0 |
| Block - | p-block | | |
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Element Description - Arsenic is a chemical element in the periodic table that has the symbol As and atomic number 33. This is a notoriously poisonous metalloid that has three allotropic forms; yellow, black and grey. Arsenic and its compounds are used as pesticides, herbicides, insecticides and various alloys. |
Element Characteristics - Arsenic is very similar chemically to its predecessor phosphorus, so much so that it will partly substitute for phosphorus in biochemical reactions and is thus poisonous. When heated it rapidly oxidizes to arsenic trioxide, which has a garlic odor. Arsenic and some arsenic compounds can also sublime upon heating, converting directly to a gaseous form. Elemental arsenic is found in two solid forms: yellow and gray/metallic, with specific gravities of 1.97 and 5.73, respectively. |
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