Group 15 elements are also called the Nitrogen family includes nitrogen phosphorus, arsenic, antimony and bismuth elements. The p-block elements are also known as the Representative Elements which is placed on the right side of the main periodic table. The 15 group of the Periodic Table consists of nitrogen, phosphorus, arsenic, antimony and bismuth. These elements are known as pnicogens and their compounds as pniconides.
Phosphorus is found in many allotropic forms, the important ones being white, red and black.
Some Points of Distinction Between White and Red Phosphorus
Black phosphorus is formed when red phosphorus is heated in a sealed tube at 803 K. It does not oxidise in air. The black phosphorous is also of further 2 types: α and β.
Matchbox side contains red P or P2S3+ glue and on tip of a match stick. red P, KClO3 chalk and glue is deposited.
Types of Black Phosphorous
It is used in matchboxes, explosives, as rat poison, in fertilizers and alloys
In toothpaste, CaHPO4.2H2O is added as a mild abrasive and polish agent.
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1. What are the physical properties of Group 15 elements? |
2. What are the chemical properties of Group 15 elements? |
3. What are some common compounds of Nitrogen? |
4. What are the different allotropic forms of phosphorus? |
5. What are some common compounds of Phosphorus? |
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