The melting point of RbBr is 682^@C, with that of NaFis988^@C. The pri – InterviewSolution

1.	The melting point of RbBr is 682^@C, with that of NaFis988^@C. The principal reason that melting point of NaF is much higher than that of RbBr is that:
Answer» The two crystals are not isomorphous The molar MASS of NaF is smaller than that of RBBR The INTERNUCLEAR DISTANCE `r_e+r_a` is greater for RbBr than for NaF The bond is RbR has more covalent character than the bond in NaF Answer :C

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