Question
Thu February 09, 2012 By: Vivek Reddy M
 

why do melting point from nitrogen to arsenic increases & from arsenic it decreases upto bismuth

Expert Reply
Fri February 10, 2012

Melting point from nitrogen to arsenic increases & from arsenic it decreases upto bismuth because down the group as the size of the element increases the tendency of elements to form three covalent bonds increases (inert pair effect).Thus, there are weak forces of attraction between their atoms in solid state leading to lowering in melting point.

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