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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
Match List$-I$ with List$-II$.

List$-II$ List$-II$
$(a)$ ${PCl}_{5}$ $(i)$ Square pyramidal
$(b)$ ${SF}_{6}$ $(ii)$ Trigonal planar
$(c)$ ${BrF}_{5}$ $(iii)$ Octahedral
$(d)$ ${BF}_{3}$ $(iv)$ Trigonal bipyramidal

Choose the correct answer from the options given below.

  • ✓
    $(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)$
  • B
    $(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)$
  • C
    $(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)$
  • D
    $(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)$
✓

Answer

Correct option: A.
$(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)$
a
$\quad\quad\quad SN$ (Stearic number)

$\mathrm{PCl}_{5} \rightarrow 5 \rightarrow \ell \mathrm{p}=0 \sigma=5 \text { Trigonal bipyramidal }$

$\mathrm{SF}_{6}\rightarrow 6 \rightarrow \ell \mathrm{p}=0 \sigma=6 \text { octahedral }$

$\mathrm{Br} F_{5} \rightarrow 6 \rightarrow \ell \mathrm{p}=1 \sigma=5 \text { square pyramidal }$

$\mathrm{BF}_{3} \rightarrow 3 \rightarrow \ell \mathrm{p}=0 \quad \sigma=3 \text { trigonal bipyramidal }$

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