Melting point of calcium halides decreases in the order

Question

Melting point of calcium halides decreases in the order (A)  CaF2 > CaCl2 > CaBr2 > CaI2  (B)  CaI2 > CaBr2 > CaCl2 > CaF2  (C)  CaBr2 > CaI2 > CaF2 > CaCl2  (D)  CaCl2 > CaBr2 > CaI2 > CaF2

Tardigrade Admin · Accepted Answer

For a particular alkaline earth metal, ionic character of different halides decrease as MF2 > MCl2 > MBr2 > MI2 due to increase in anionic size. Thus their melting points also follow the order. MF2 > MCl2 > MBr2 > MI2

Q. Melting point of calcium halides decreases in the order

$C a F_{2} > C a C l_{2} > C a B r_{2} > C a I_{2}$

$C a I_{2} > C a B r_{2} > C a C l_{2} > C a F_{2}$

$C a B r_{2} > C a I_{2} > C a F_{2} > C a C l_{2}$

$C a C l_{2} > C a B r_{2} > C a I_{2} > C a F_{2}$

For a particular alkaline earth metal, ionic character of different halides decrease as $M F_{2} > MC l_{2} > MB r_{2} > M I_{2}$ due to increase in anionic size. Thus their melting points also follow the order. $M F_{2} > MC l_{2} > MB r_{2} > M I_{2}$

Q. Melting point of calcium halides decreases in the order

CaF2​>CaCl2​>CaBr2​>CaI2​

CaI2​>CaBr2​>CaCl2​>CaF2​

CaBr2​>CaI2​>CaF2​>CaCl2​

CaCl2​>CaBr2​>CaI2​>CaF2​

For a particular alkaline earth metal, ionic character of different halides decrease as MF2​>MCl2​>MBr2​>MI2​ due to increase in anionic size. Thus their melting points also follow the order. MF2​>MCl2​>MBr2​>MI2​

$C a F_{2} > C a C l_{2} > C a B r_{2} > C a I_{2}$

$C a I_{2} > C a B r_{2} > C a C l_{2} > C a F_{2}$

$C a B r_{2} > C a I_{2} > C a F_{2} > C a C l_{2}$

$C a C l_{2} > C a B r_{2} > C a I_{2} > C a F_{2}$

For a particular alkaline earth metal, ionic character of different halides decrease as $M F_{2} > MC l_{2} > MB r_{2} > M I_{2}$ due to increase in anionic size. Thus their melting points also follow the order. $M F_{2} > MC l_{2} > MB r_{2} > M I_{2}$