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JEE Main 202125 FebruaryEvening Shift
Exam
JEE Main
Year
2021
Date
25 February
Shift
Evening Shift
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

JEE Main 2021 · 25 February · Evening Shift · Chemistry · Chemical Bonding and Molecular Structure

Which among the following species has unequal bond lengths?

Which among the following species has unequal bond lengths?

Options

  1. ASiF4{SiF}_{4}
  2. BSF4{SF}_{4}
  3. CXeF4{XeF}_{4}
  4. DBF4{BF}_{4}

Correct answer

B. SF4{SF}_{4}

Step-by-step solution

Species Hybridisation Bond length
BF4⊝{BF}_{4}^{⊝} sp3{sp}^{3} (Tetrahedral) All bond lengths equal
XeF4{XeF}_{4} sp3d2{sp}^{3}{d}^{2} (sq. planar) All bond lengths equal
SF4{SF}_{4} sp3d{sp}^{3}d (see - saw) axial bond length >> equitorial bond length
SiF4{SiF}_{4} sp3{sp}^{3} (Tetrahedral) all bond lengths equal
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