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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
In which of the following molecules/ions are all the bond angles not equal
  • A
    $SiF_4$
  • B
    $ICl_4^-$
  • ✓
    $SF_4$
  • D
    $PCl_4^ + $
✓

Answer

Correct option: C.
$SF_4$
c
$SF _4$ do not have equal bonds, because of it structure its structure is Trigonal bipyramidal. Sulfur in $SF _4$ show $+4$ oxidation state. sulfur has total six valence electrons, two form a lone pair. The fluorine-sulfur-fluorine bond angles are $120$ degree in the trigonal plane and $90$ degrees to the two fluorine atoms above and below the plane. So their bond lengths also varies.

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