Phosphorus, arsenic and antimony - p block, Chemistry

PHOSPHORUS, ARSENIC AND ANTIMONY

The bigger elements in the same group (15) as nitrogen are usually known as 'pnictogens' and their compounds with metals as 'pnictides'. Although the elements form some compounds same to those of nitrogen, there are widely pronounced differences, as is found in other nonmetal groups.

Phosphorus is moderately abundant in the Earth's crust as the phosphate ion; the major mineral source is apatite Ca5 (PO4)3(F,Cl,OH), the notation (F,Cl,OH) being used to display that OH- and F-, Cl- can be define in varying proportions. Antimony and arsenic are much rarer. They find in minerals such as stibnite Sb2S3 and realgar As4S4, but are widely collect as byproducts from the processing of sulfide ores of other elements. Elemental P is finding by reduction of calcium phosphate. The complex reaction likes to:

 

 

1670_Untitled.png

Most phosphates are required more directly without conversion to the element. Phosphorus has greater allotropes. It is most frequently encountered as white phosphorus, which have tetrahedral P4 molecules with Td symmetry. Other forms, which are more stable and reliable thermodynamically but kinetically harder to build, contain polymeric networks with three-coordinate P. White phosphorus is highly toxic and reactive.

 

Posted Date: 7/23/2012 7:05:27 AM | Location : United States







Related Discussions:- Phosphorus, arsenic and antimony - p block, Assignment Help, Ask Question on Phosphorus, arsenic and antimony - p block, Get Answer, Expert's Help, Phosphorus, arsenic and antimony - p block Discussions

Write discussion on Phosphorus, arsenic and antimony - p block
Your posts are moderated
Related Questions
How many grams of silica gel and plaster of paris and volume of water is needed to have a preparative TLC?


What are the physical propeties of S block ?

sulphuric acid can be made with concentration of 99%. However for different industrial process different concentration are used. For a specific industrial requirement, 62% H2SO4 is

what should a project contain

Basics of Potentiometry: In this unit, you have learnt about electrode potentials, principles of potentiometer and measurement of potential, different types of reference elect

IUPAC system - Nomenclature of organic compounds To rationalise the system of naming, as an International Congress of Chemists was held in Geneva in year 1892. They adopted spe

what groups comprise each block of elements(s,p.d and f blocks)in the periodic table


what is acid