Question 1

Which of the following molecules has a trigonal bipyramidal electron geometry around its central atom?

Accepted Answer

PCl$$_5$$

Question 2

What is the bond angle in a molecule with a tetrahedral electron geometry?

Accepted Answer

$$109.5^\circ$$

Question 3

Which of the following best describes the concept of orbital overlap in covalent bond formation?

Accepted Answer

The sharing of electrons between two atoms occurs when their atomic orbitals overlap in space.

Question 4

Which hybridization is present in the central atom of CO$$_2$$?

Accepted Answer

sp

Question 5

A molecule has the following charge clouds around its central atom: two single bonds and one lone pair. What is its electronic geometry?

Accepted Answer

Trigonal planar

Question 6

Which of the following molecules is polar due to its molecular geometry, even though its bonds are nonpolar?

Accepted Answer

NH$$_3$$

Question 7

Which statement correctly describes the difference between sigma ($$\sigma) $$and pi ($$\pi) $$bonds?

Accepted Answer

$$\sigma$$ bonds result from end-to-end overlap of orbitals, while $$\pi$$ bonds result from side-to-side overlap.

Question 8

Which of the following molecules has a permanent dipole moment?

Accepted Answer

H$$_2O$$

Question 9

Which intermolecular force is present in all substances, but is the only force in nonpolar molecules?

Accepted Answer

London dispersion forces

Question 10

Which of the following molecules would have the highest boiling point due to hydrogen bonding?

Accepted Answer

NH$$_3$$

Question 11

A molecule has a central atom with four charge clouds: two single bonds and two lone pairs. What is the molecular geometry?

Accepted Answer

Bent

Question 12

Which of the following best explains why the boiling point of I$$_2 is $$higher than that of F$$_2$$?

Accepted Answer

I$$_2$$ has greater London dispersion forces due to its larger size and more electrons.

Question 13

Which of the following is true about the hybridization of the central atom in NH$$_3$$?

Accepted Answer

The central atom is sp$$^3$$ hybridized.

Question 14

Which of the following molecules is nonpolar despite having polar bonds?

Accepted Answer

CO$$_2$$

Question 15

Which of the following intermolecular forces is responsible for the high boiling point of water?

Accepted Answer

Hydrogen bonding

Question 16

Which statement about polarizability is correct?

Accepted Answer

Polarizability increases with increasing molecular size and shape.

Question 17

Which of the following molecules has sp$$^2$$ hybridization at the central atom?

Accepted Answer

BF$$_3$$

Question 18

Which of the following is NOT a valid molecular shape for a molecule with five charge clouds around the central atom?

Accepted Answer

Square planar

Question 19

Which of the following best describes the difference between intermolecular and intramolecular forces?

Accepted Answer

Intermolecular forces act between molecules, while intramolecular forces hold atoms together within a molecule.

Question 20

Which of the following molecules would have the greatest London dispersion forces?

Accepted Answer

Xe

General Chemistry: Molecular Structure, Bonding, and Intermolecular Forces

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