Which molecule has a bond angle of approximately 109.5°?
- A) Carbon dioxide (COâ‚‚)
- B) Ammonia (NH₃)
- C) Methane (CHâ‚„)
- D) Water (Hâ‚‚O)
Answer: C) Methane (CHâ‚„)
Which hybridization is associated with a molecule that has a trigonal planar geometry?
- A) sp
- B) sp²
- C) sp³
- D) sp³d
Answer: B) sp²
What is the shape of a molecule with four bonds and two lone pairs around the central atom?
- A) Tetrahedral
- B) Octahedral
- C) Square planar
- D) Trigonal pyramidal
Answer: C) Square planar
Which molecule exhibits a linear geometry with a triple bond?
- A) Ethylene (Câ‚‚Hâ‚„)
- B) Acetylene (Câ‚‚Hâ‚‚)
- C) Methane (CHâ‚„)
- D) Carbon dioxide (COâ‚‚)
Answer: B) Acetylene (Câ‚‚Hâ‚‚)
In which molecule is the central atom sp³d² hybridized?
- A) Methane (CHâ‚„)
- B) Phosphorus pentachloride (PClâ‚…)
- C) Sulfur hexafluoride (SF₆)
- D) Water (Hâ‚‚O)
Answer: C) Sulfur hexafluoride (SF₆)
What is the bond angle in a molecule with a tetrahedral shape?
- A) 90°
- B) 120°
- C) 109.5°
- D) 180°
Answer: C) 109.5°
Which molecule has a trigonal pyramidal molecular geometry?
- A) Methane (CHâ‚„)
- B) Ammonia (NH₃)
- C) Carbon dioxide (COâ‚‚)
- D) Boron trifluoride (BF₃)
Answer: B) Ammonia (NH₃)
Which type of bond is formed between two atoms that have a difference in electronegativity of 1.5?
- A) Ionic bond
- B) Covalent bond
- C) Metallic bond
- D) Hydrogen bond
Answer: A) Ionic bond
Which molecule has a planar, trigonal geometry around the central atom?
- A) Methane (CHâ‚„)
- B) Carbon dioxide (COâ‚‚)
- C) Boron trifluoride (BF₃)
- D) Ammonia (NH₃)
Answer: C) Boron trifluoride (BF₃)
What is the hybridization of the central atom in a molecule with a trigonal bipyramidal shape?
- A) sp
- B) sp²
- C) sp³
- D) sp³d
Answer: D) sp³d