Group 15 Nitrogen-14, Arsenic-75, Antimony

Phosphorus is found in Group 15 (VA) of the periodic table. The periodic table is a chart that shows how chemical elements are related to each other. Phosphorus is part of the nitrogen family along with nitrogen, arsenic, antimony, and bismuth. 

Phosphorus is a nonmetallic chemical element which, together with nitrogen, arsenic, antimony, and bismuth, comprise Group VA of the Periodic Table of the elements. Phosphorus has an atomic weight of 30.9738, and in all naturally occurring compounds is present as the stable isotope, P. Radioactive P has a half-life of... 

Phosphoras belongs to Group VB in the periodic table along with nitrogen, arsenic, antimony, and bismuth. It exhibits -I-3 and -I-5 valence states. Therefore, in most cases it forms tri- and pentavalent salts. It occurs widely in nature and many of its compounds find wide commercial applications. Phosphorus compounds that are hazardous may be classified under a few broad categories ... 

Symbol P At. wt. 30.9738 At. no. 15 CAS [7723-14-0] valences 3, 5 position in the periodic table group VB, along with nitrogen, arsenic, antimony and bismuth natmal isotope P radioactive isotopes (artificial) ... 

Nitrogen is the most important of the group 5A elements. Of the other elements in this group—phosphorus, arsenic, antimony, and bismuth—phosphorus has a central role in several aspects of biochemistry and environmental chemistry. In this section we will explore the chemistry of these other group 5A elements, with an emphasis on the chemistry of phosphorus. 

Arsenic is a group 15 element on the periodic table along with nitrogen, phosphorus, antimony, and bismuth. The atomic mass of arsenic is 74.921 60 atomic mass units (amu) and its atomic number (Z)... 

The poor metals among the BCNOs usually include aluminum, gallium, indium, thallium, tin, lead, and bismuth. The metalloids are boron, silicon, germanium, arsenic, antimony, tellurium, and polonium. The nonmetals are carbon, nitrogen, oxygen, phosphorus, sulfur and selenium. These groups are not official, and chemists sometimes disagree on whether a particular element like boron should be called a metal or a metalloid. 

The SRN1 process has proven to be a versatile mechanism for replacing a suitable leaving group by a nucleophile at the ipso position. This reaction affords substitution in nonactivated aromatic (ArX) compounds, with an extensive variety of nucleophiles ( u ) derived from carbon, nitrogen, and oxygen to form new C—C bonds, and from tin, phosphorus, arsenic, antimony, sulfur, selenium, and tellurium to afford new C-heteroatom bonds. 

It has already been emphasized that within a family of non transition elements, metallic character increases with increase in atomic number, atomic weight, and atomic size. There is no better illustration of this trend than Periodic Group Vb the lightest members of the group, nitrogen (Z = 7), and phosphorus (Z — 15), are typical nonmetals, whereas the heaviest member, bismuth (Z = 83) is a typical metal. The remaining members, arsenic (Z = 33) and antimony (Z 51) are intermediate in character and are often appropriately called metalloids. 

In 1985 McMahan and LeSar predicted that the triple bond in molecular nitrogen should be breakable under very high pressures and a solid should be formed which consists of trivalent (i.e. three-coordinate) nitrogen atoms (pressure-coordination rule). Such structures already exist at normal pressures for the other group 15 elements phosphorus, arsenic, antimony and bismuth. The transformation pressure for nitrogen should lie in a range between 500 and 940 kbar. An estimation... 

Other chemists then showed that the elements could be classified into groups coi sisiing of hiore than three similar elements. Fluorine was added to the tri ad of "chlorine, bromine, and iodine, and magnesium to the triad calcium, strontium, barium. Oxygen, sulfur, selenium, and tellurium had been classed as one family, and nitrogen, phosphorus, arsenic, antimony, and bismuth as another family ot elements by 1854. 

Group V, the nitrogen or phosphorus group Nitrogen and phosphorus are non-metals, and their congeners arsenic, antimony, and bismuth are metalloids. Tiie chemistry of nitrogen is described briefly... 

The members of group of the periodic table show the expected trend in properties with increasing atomic number (f able 21 1) nitrogen is a gas which can be condensed to a liquid only at very low temperatures phosphorus (in the modification called w I tilt phosphorus) is a low-melting non-metal and arsenic, antimony, and bismuth are metalloids with increasing metallic character. 

Group V Elements Nitrogen Phosphorus Arsenic Antimony Bismuth... 

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