Chemical Bonding and Molecular Structure MCQs Question and Answer in Engineering Chemistry

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The species which has a square planar structure is

A) $${\text{BF}}_4^ - $$ B) $${\text{FeCl}}_4^ - $$ C) SF₄ D) XeF₄

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Answer & Solution

Answer: Option D

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The hybrid orbitals used by bromine atom in BrF₃ are

A) sp² B) sp³ C) sp³d D) sp³d²

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Answer & Solution

Answer: Option C

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The symmetry elements that are present in BF₃ are

A) C₃, σ_v, σ_h, 3C₂ B) C₃, 3C₂, S₂, σ_v C) C₃, 3C₂, σ_h, S₂ D) C₃, σ_h, σ_v, i

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Answer & Solution

Answer: Option A

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The symmetry point group of the BF₃ molecule is

A) C_3v B) D_3h C) C_2v D) D_2h

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Answer & Solution

Answer: Option B

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Icosahedral structure is generally exhibited by

A) C B) Si C) Ge D) B

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Answer & Solution

Answer: Option D

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On the basis of LCAO-MO theory, the magnetic characteristics of N₂ and $${\text{N}}_2^ + $$ are

A) both diamagnetic B) both paramagnetic C) N₂ diamagnetic and $${\text{N}}_2^ + $$ paramagnetic D) N₂ paramagnetic and $${\text{N}}_2^ + $$ diamagnetic

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Answer & Solution

Answer: Option C

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The point group of CIF₃ molecule and its corresponding number of irreducible representations are respectively

A) C_3v and 4 B) C_2v and 4 C) C_3v and 3 D) C_2v and 3

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Answer & Solution

Answer: Option D

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The crystal structure of Pb₃O₄ contains

A) octahedral and tetrahedral units B) only octahedral units C) octahedral arid pyramidal units D) octahedral and square planar units

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Answer & Solution

Answer: Option A

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The ground state term symbols for high spin d⁵s¹ and d⁵ configurations, respectively are

A) ³S and ⁶S B) ⁶P and ³S C) ⁷S and ⁶S D) ⁷P and ⁶S

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Answer & Solution

Answer: Option C

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The bond angle of Cl₂O is

A) smaller than of F₂O B) greater than that of H₂O C) smaller than that of H₂O D) same as that of F₂O

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Answer & Solution

Answer: Option B

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