pnictogens in a sentence

• Direct reaction of indium with the pnictogens produces the gray or semimetallic III V semiconductors.
• The heavier pnictogens also form analogous monopnictides, except ThBi which has not yet been structurally characterised.
• The upper pnictogens, that is, nitrogen, phosphorus, and arsenic tend to form  " 3 charges.
• Bismuth, a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony.
• All five chemically characterised pnictogens ( nitrogen, phosphorus, arsenic, antimony, and bismuth ) also form compounds with thorium.
• The pnictogens form trifluorides that increase in reactivity and basicity with higher molecular weight, although nitrogen trifluoride resists hydrolysis and is not basic.
• Finally, it led to the name " pnictogens " for the group headed by nitrogen, from the Greek ??????? " to choke ".
• In the higher oxidation states of the pnictogens, chalcogens, halogens, and noble gases there are oxoacids in which the central atom is attached to oxide ions and hydroxide ions.
• Furthermore, the nitrogen atom may be replaced by a phosphorus, arsenic, or antimony atom ( the heavier nonmetallic pnictogens ), creating a phosphonium ( ) or arsonium ( ) cation that can itself be substituted similarly; while stibonium ( ) itself is not known, some of its organic derivatives are characterised.
• This is because they should all decompose to dinitrogen, whose Na " N triple bond ( bond energy 946 kJ?" mol  " 1 ) is much stronger than those of the N = N double bond ( 418 kJ?" mol  " 1 ) or the N N single bond ( 160 kJ?" mol  " 1 ) : indeed, the triple bond has more than thrice the energy of the single bond . ( The opposite is true for the heavier pnictogens, which prefer polyatomic allotropes . ) A great disadvantage is that most neutral polynitrogens are not expected to have a large barrier towards decomposition, and that the few exceptions would be even more challenging to synthesise than the long-sought but still unknown tetrahedrane.
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