What is the shape of a molecule with a central atom surrounded by four bonds and no lone pairs?
- A) Linear
- B) Trigonal planar
- C) Tetrahedral
- D) Octahedral
Answer: C) Tetrahedral
Which of the following molecules exhibits a bent shape?
- A) Methane (CHâ‚„)
- B) Carbon dioxide (COâ‚‚)
- C) Water (Hâ‚‚O)
- D) Ammonia (NH₃)
Answer: C) Water (Hâ‚‚O)
What is the bond angle in a molecule with a trigonal planar geometry?
- A) 90°
- B) 109.5°
- C) 120°
- D) 180°
Answer: C) 120°
Which type of hybridization is present in a molecule with a tetrahedral shape?
- A) sp
- B) sp²
- C) sp³
- D) sp³d
Answer: C) sp³
In a molecule with a linear geometry and two double bonds, the central atom is likely to be:
- A) Carbon
- B) Nitrogen
- C) Oxygen
- D) Sulfur
Answer: A) Carbon
What is the molecular geometry of a molecule with three bonds and one lone pair around the central atom?
- A) Tetrahedral
- B) Trigonal pyramidal
- C) Trigonal planar
- D) Linear
Answer: B) Trigonal pyramidal
Which of the following molecules has a triple bond?
- A) Ethene (Câ‚‚Hâ‚„)
- B) Acetylene (Câ‚‚Hâ‚‚)
- C) Methane (CHâ‚„)
- D) Ethane (C₂H₆)
Answer: B) Acetylene (Câ‚‚Hâ‚‚)
In which molecule does the central atom exhibit sp² hybridization?
- A) Methane (CHâ‚„)
- B) Water (Hâ‚‚O)
- C) Formaldehyde (CHâ‚‚O)
- D) Ammonia (NH₃)
Answer: C) Formaldehyde (CHâ‚‚O)
Which of the following is true about the bond angles in a molecule with an octahedral geometry?
- A) The bond angles are 90° and 180°.
- B) The bond angles are 120° and 180°.
- C) The bond angles are 109.5°.
- D) The bond angles are 90° and 120°.
Answer: A) The bond angles are 90° and 180°.
What type of molecular shape does a molecule with two bonding pairs and two lone pairs around the central atom exhibit?
- A) Linear
- B) Tetrahedral
- C) Bent
- D) Trigonal planar
Answer: C) Bent