Which of the following has the lowest melting | vedclass

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(B) The melting point of alkaline earth metal fluorides depends on their ionic character. $BeF_2$ is predominantly covalent due to the small size and

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$BeF_2$

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(B) The melting point of alkaline earth metal fluorides depends on their ionic character. $BeF_2$ is predominantly covalent due to the small size and high polarizing power of the $Be^{2+}$ ion. In contrast,$MgF_2$,$CaF_2$,and $SrF_2$ are ionic compounds with high lattice energies. Therefore,$BeF_2$ has the lowest melting point $(800^{\circ} C)$ compared to the others which melt at temperatures above $1200^{\circ} C$.

Which of the following has the lowest melting point?

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