Pnictogen
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A pnictogen is one of the chemical elements in group 15 of the periodic table, sometimes referred to as the nitrogen family.
Contents
Elements in the pnictogen group
Nitrogen
Nitrogen, atomic number 7, is a colorless gas, practically non-reactive at room temperature.
Phosphorus
Phosphorus, atomic number 15, is a solid element, which comes in several distinct allotrope forms.
Arsenic
Arsenic, atomic number 33, is a toxic metalloid, with a variety of uses in chemistry.
Antimony
Antimony, atomic number 51, is a silvery metal or metalloid, commonly encountered in alloys, usually with lead. It has several allotrope forms.
Bismuth
Bismuth, atomic number 83, is the most diamagnetic metal and although considered stable, it is slightly radioactive, with a half life estimated to be (1.9 +/- 0.2 ) x 1019 years.
Moscovium
Moscovium, atomic number 115, is a radioactive element first synthesized in 2003, with the most stable isotope, moscovium-290, having a half-life of 0.8 s.
Properties
Chemical
Pnictogens display the oxidation states of 3 and 5.
Physical
Nitrogen is a gas, phosphorus is a solid non-metal, arsenic and antimony are metalloids, while bismuth is a dense metal.
Safety
Arsenic is very toxic, while antimony displays moderate toxicity.
