The melting points of a series of compounds are reported. Which of the options likely represents a molecular species? A. 801 ""^@C; B. 1600 ""^@C; C. 1538 ""^@C; D. 0 ""^@C;

1 Answer
Oct 10, 2016

My educated (?) guess would be D.

Explanation:

Ionic compounds are non-molecular and tend to possess high melting points, and very high boiling points. Refer to the melting point of say NaCl, at 801 ""^@C.

On the other hand, molecular species are composed of discrete molecules, and the interparticle, i.e intermolecular, interactions tend to be much less in magnitude than those observed for non-molecular species. A, B, and C are contraindicated.