by:Andy Ma

Arsenic is a element on the periodic table with the atomic number 33 and symble As. Arsenic is a metalloid meaning it is a metal and a non-metal. Arsenic is commonly used for rodent and bug repellent. Arsenic was discovered in 1250 A.D. when it was finally isolated into a element by Albertus Magnus.

Arsenic Uses

Arsenic is also commonly used for wood preservative to keep in a good state.


This is a picture of Albert Magnus also know as Albert the Great the one who was believed to discover arsenic and to isolate the element arsenic. He distinguished the element by heating soap with orpiment.

Interesting Facts

Arsenic is a highly poisonous substance having three different allotropic forms, namely, yellow, black and grey. The most common form is the brittle, crystalline grey. The word arsenic has been derived from the Syriac word ‘zarniqa’ and Persian word ‘zarnikh’, which means “yellow orpiment”. The word is also related to a Greek word ‘arsenikos’, which means “masculine” or “potent”. It is a natural element that behaves like a metal and is released both naturally from the Earth’s crust and from certain human activities. Though the element was discovered by Asians, Egyptians, Greeks, Romans and Chinese in the ancient times, it was only in 1250, that Albertus Magnus, a German Dominican produced arsenic in a free form.

Important Facts!!

The atomic number of arsenic is 33, the atomic mass is 74.92, arsenic also have 33 isotopes, 33 protons, 33 electrons,and 42 neutrons. Also arsenic is a metalloid that has 5 valence electrons and is in group 15 of the periodic table.


Arsenic was formerly named arsenikon. Arsenic compounds were mined by early Chinese, Greek, and Egyptian civilizations. From the beginning arsenic was known to have toxic properties.

Properties of Arsenic

Arsenic has a melting point of 1503 degrees fahrenheit and boiling point of 1137 degrees fahrenheit.

Aresnic Poisoning Symptoms

Arsenic poisoning may cause vomiting, abdominal pain, diarrhea, dark urine, dehydration, cardiac problems, hemolysis, vertigo, delirium, shock, and death.


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