Fosfori

Kemiallinen merkki: P
Järjestysluku: 15
Kategoria: epämetallit
Ryhmä: 15
Jakso: 3
Lohko: p
Moolimassa: 30,973762 g/mol
Elektronia kuorilla: 2, 8, 5
CAS-numero: 7723-14-0
Olomuoto: kiinteä
Tiheys: 1,823 kg/l (white) - near room temperature 2,34 kg/l (red) - near room temperature 2,69 kg/l (black) - near room temperature
Sulamispiste: 317,3 K (44,2 °C, 111,6 °F) (white)
Kiehumispiste: 550 K (277 °C, 531 °F) (white)
Kiderakenne: body-centered cubic (white), orthorhombic (black)
Hapetusluvut: 5, 4, 3, 2, 1, -3
Elektronegatiivisuus: 2,19 (Pauling-asteikko)
Nimen alkuperä: Phosphorus
Nimen tarkoitus: in Ancient Greece it was the name of the planet Venus, and is derived from words which translate as 'light carrier'
Faktoja:
- is commonly found in inorganic phosphate rocks
- due to its high reactivity, phosphorus is never found as a free element in nature on Earth
- is a component of DNA, RNA, ATP, and also the phospholipids which form all cell membranes
- the most important commercial use of phosphorus- based chemicals is the production of fertilizers
- is also widely used in explosives, nerve agents, friction matches, fireworks, pesticides, toothpaste and detergents
- emits a faint glow upon
- a wide range of organophosphorus compounds are used for their toxicity to certain organisms as pesticides (herbicides, insecticides, fungicides, etc,) and weaponized as nerve agents
- chronic white phosphorus poisoning leads to necrosis of
- the white phosphorus allotrope should be kept under water at all times as it presents a significant fire hazard due to its extreme reactivity with atmospheric oxygen, and it should only be manipulated with forceps since contact with skin