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

Asked by Vivek Reddy M | 9th Feb, 2012, 10:25: PM

Expert Answer:

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.

Answered by  | 10th Feb, 2012, 09:56: AM

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