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
Typical conductometric titration curve for a weak aci and a strong base

How is chemical reaction reversible and irreversible?

The covalent bond produced by the unequal sharing of electrons among the two atoms is known as polar covalent bond.

The valency of sulphur in sulphuric acid is: (1) 2   (2) 4    (3) 6                               (4) 8 Ans:  6

Millikan and Harvey Fletchers oil-drop experiment The original experiment was performed in the year 1909 through Robert Millikan and Harvey Fletcher through balancing the downw

The charge on the atom containing 17 protons, 18 neutrons and 18 electrons is: (1) +1                    (2) -2      (3) -1                     (4)Zero Ans: -1

In the addition of the hydrogen, halide to unsaturated alkenes in the presence of peroxides the halide adds to the carbon atom correlated to more number of hydrogen atoms and hydro



Uses of glycol