Explain substances has high boiling point

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Reference no: EM13330166

Analysis of an unknown substance showed that it has high boiling point and is brittle. It is an insulator as a solid but conducts electricity when melted, which of the following substances would have those characterisitics? *please explain how to get to answer to understand*

A) HCl

B)Al

C)KBr

D)SiF4

E)I2

Reference no: EM13330166

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