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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
Identify the option $(s)$ which contain correct statements
  • A
    Dipole moment of all the three compounds will be zero
  • B
    Among $HF, HCl, HBr$ and $HI, HCl$ will have the least bond energy
  • C
    $NaHCO_3$ has no $H-$ bonding
  • D
    The order of bond strength of $\sigma $ bond will be $1s -1s > 1s -2p_x > 2p_x -2p_x$
✓

Answer

$(A)$ (image)

$(B)$ $HI$ has least bond energy.

$(C)$ In $NaHCO_3, HCO_3^ -$ ions are associated by hydrogen bonding

$(D)$ Bond strength depends on $‘n’$ & also on directional nature of orbitals

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