$\text{valence electrons} - \frac{1}{2}(\text{bonding electrons}) - \text{nonbonding electrons}$

Question 1

Which of the following elements has the highest effective nuclear charge ($Z_{eff}$) for its outermost electron?

Accepted Answer

Al

Question 2

What is the condensed electron configuration for Ca$^{2+}$?

Accepted Answer

$[Ar]$

Question 3

Which species has the strongest S=O bond?

Accepted Answer

$SO_3$

Question 4

What is the molecular geometry and ideal bond angle of $SO_3$?

Accepted Answer

Trigonal planar, $120^\	ext{o}$

Question 5

Which of the following has the most negative electron affinity?

Accepted Answer

F

Question 6

Given the following ionization energy diagram, which element is most likely depicted?

Accepted Answer

Al

Question 7

What charge will Al have after its fifth ionization?

Accepted Answer

$5^+$

Question 8

Which of the following molecules is polar?

Accepted Answer

$H_2S$

Question 9

What is the formal charge on the central atom in $SF_2O$?

Accepted Answer

0

Question 10

Which element has the highest electronegativity according to the provided table?

Accepted Answer

F

Question 11

What is the bond order of $SO_3$ considering resonance?

Accepted Answer

$\frac{2}{1.5}$

Question 12

Which of the following ions is isoelectronic with Xe?

Accepted Answer

$Ba^{2+}$

Question 13

What is the maximum number of electrons that can occupy the 3d orbitals?

Accepted Answer

10

Question 14

Which element has a full outer shell and thus the most positive electron affinity?

Accepted Answer

Ne

Question 15

What is the formula for calculating lattice energy?

Accepted Answer

$\frac{kQ_1Q_2}{d_{radius}}$

Question 16

Which of the following statements about resonance structures is true?

Accepted Answer

The actual molecule is a hybrid of all resonance structures.

Question 17

What is the condensed electron configuration for Cu$^{2+}$?

Accepted Answer

$[Ar] 3d^9$

Question 18

Which element has the lowest effective nuclear charge ($Z_{eff}$) for its outermost electron?

Accepted Answer

K

Question 19

Which of the following elements has electron configurations ending in $ns^2np^6$?

Accepted Answer

Group 18 (noble gases)

Question 20

What is the formula for calculating formal charge?

Accepted Answer

$	ext{valence electrons} - \frac{1}{2}(	ext{bonding electrons}) - 	ext{nonbonding electrons}$

Atomic Structure, Electron Configuration, and Chemical Bonding: General Chemistry Study Notes

Study Guide - Practice Questions