Q49 / 200 · NEET 2011 (Screening) · Chemistry

Which of the following compounds has the lowest melting point?

A
$\mathrm{CaBr}_2$
Correct answer
B
$\mathrm{CaI}_2$
C
$\mathrm{CaF}_2$
D
$\mathrm{CaCl}_2$

Solution

As covalent character increases, melting point decreases, thus order of melting point is $$ \mathrm{CaF}_2>\mathrm{CaCl}_2>\mathrm{CaBr}_2>\mathrm{CaI}_2 $$

Hence, the correct answer is option: 'B'.

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