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Chemical Bonding and Molecular Structure question

2024 · 8 Apr · Shift 1 · Q8
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Chemical Bonding and Molecular Structure question

2024 · 8 Apr · Shift 1 · Q8

JEE MainChemistryChemical Bonding and Molecular StructureMCQ+4 / −1

Match List I with List II

LIST I
(Molecule)
LIST II
(Shape)
A. NH3\mathrm{NH_3}NH3​ I. Square pyramid
B. BrF5\mathrm{BrF_5}BrF5​ II. Tetrahedral
C. PCl5\mathrm{PCl_5}PCl5​ III. Trigonal pyramidal
D. CH4\mathrm{CH_4}CH4​ IV. Trigonal bipyramidal

Choose the correct answer from the options given below:

  1. A
    A-II, B-IV, C-I, D-III
  2. B
    A-III, B-I, C-IV, D-II
  3. C
    A-IV, B-III, C-I, D-II
  4. D
    A-III, B-IV, C-I, D-II
View written solutionFree

Correct answer: B

  1. Determine the shape of each molecule using VSEPR theory
  • A. NH3\mathrm{NH_3}NH3​

    • Central atom: N
    • Bond pairs = 3, lone pairs = 1
    • Electron-pair geometry = tetrahedral
    • Molecular shape = trigonal pyramidal
    • So, A →\to→ III
  • B. BrF5\mathrm{BrF_5}BrF5​

    • Central atom: Br
    • Bond pairs = 5, lone pairs = 1
    • Total electron pairs = 6
    • Electron-pair geometry = octahedral
    • Molecular shape = square pyramidal
    • So, B →\to→ I
  • C. PCl5\mathrm{PCl_5}PCl5​

    • Central atom: P
    • Bond pairs = 5, lone pairs = 0
    • Molecular shape = trigonal bipyramidal
    • So, C →\to→ IV
  • D. CH4\mathrm{CH_4}CH4​

    • Central atom: C
    • Bond pairs = 4, lone pairs = 0
    • Molecular shape = tetrahedral
    • So, D →\to→ II
  1. Final matching

A→III,B→I,C→IV,D→IIA\to III, \quad B\to I, \quad C\to IV, \quad D\to IIA→III,B→I,C→IV,D→II

  1. Compare with options

This corresponds to Option B.

  1. Comparison with stored answer

Stored correct answer = B

My derived answer = B

So, they agree.

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