Question 1

Which of the following electron configurations correctly represents the ground state of phosphorus (Z=15)?

Accepted Answer

1s22s22p63s23p3

Question 2

According to the periodic trend, which element is the most electronegative among the following?

Accepted Answer

Cl

Question 3

Which of the following statements about the octet rule is correct for the oxygen atom in methanol (CH3OH)?

Accepted Answer

Oxygen possesses 8 octet electrons: 6 valence and 2 shared electrons.

Question 4

What is the formal charge on the central carbon atom in the thiocyanate ion (SCN-)?

Accepted Answer

0

Question 5

Which of the following is a correct step when drawing the Lewis Dot Structure for COCl2?

Accepted Answer

Place the least electronegative atom (except hydrogen) in the center.

Question 6

Which statement about resonance structures is correct for the nitrate ion (NO3-)?

Accepted Answer

The resonance hybrid is a composite of all major resonance structures.

Question 7

What is the hybridization of the central atom in hydrogen cyanide (HCN)?

Accepted Answer

sp1

Question 8

Which of the following molecules is polar?

Accepted Answer

NF3

Question 9

Which functional group is present in the following structure: CH(OH)COOH?

Accepted Answer

Alcohol and carboxylic acid

Question 10

Which of the following best describes a hydrocarbon?

Accepted Answer

A molecule containing only carbon and hydrogen atoms

Question 11

What is the atomic number of an atom with 6 protons, 6 neutrons, and 6 electrons?

Accepted Answer

6

Question 12

Which of the following electron configuration diagrams violates Hund's Rule?

Accepted Answer

A diagram where two electrons with opposite spins occupy the same p orbital before all p orbitals are singly occupied

Question 13

Which of the following statements about isotopes is correct?

Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons

Question 14

Which of the following best describes a resonance hybrid?

Accepted Answer

A composite of all major resonance structures

Question 15

How many unhybridized p orbitals are present on the central atom in a molecule with 2 electron groups and linear geometry?

Accepted Answer

2

Question 16

Which of the following molecules is nonpolar?

Accepted Answer

CO2

Question 17

Which of the following is the correct condensed electron configuration for chlorine (Z=17)?

Accepted Answer

[Ne]3s23p5

Question 18

Which of the following best describes the Pauli Exclusion Principle?

Accepted Answer

No two electrons in the same atom can have the same set of four quantum numbers

Question 19

Which of the following is a correct statement about valence electrons?

Accepted Answer

Valence electrons are the electrons in the outermost shell of an atom

General Chemistry Study Notes: Atomic Structure, Bonding, and Molecular Properties

Study Guide - Practice Questions