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In which of the following first one has lower melting point than the second one.

Option: 1

\mathrm{\mathrm{FeCl}_2, \mathrm{FeCl}_3}


Option: 2

\mathrm{CaCl_{2},CdCl_{2}}


Option: 3

\mathrm{KI,CaO}


Option: 4

\mathrm{\mathrm{BeF}_2,\mathrm{BeCl}_2}


Answers (1)

best_answer

Ionic compounds have high melting points whereas covalent compounds have low melting points. Here in option 3, \text{KI} has covalent character than \text{CaO}. So has less melting point.

Posted by

Gautam harsolia

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