MCQ
The correct order as indicate in each option is
  • $CaF_2 > CaCl_2 > CaBr_2$       Melting point
  • B
    $CH_3F > CH_3Cl > CH_3Br$       Dipole moment
  • C
    $n{p_\pi } - np\pi  < ns - ns > ns - np$       Extent of overlapping
  • D
    $H_2 > H_2^+ = H_2^-$        Stability

Answer

Correct option: A.
$CaF_2 > CaCl_2 > CaBr_2$       Melting point
a

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