Question 1

Which of the following intermolecular forces is present in all molecular substances, regardless of their polarity?

Accepted Answer

Dispersion forces

Question 2

Consider the set of isoelectronic atoms and ions A$$^{+}$$, B$$^{-}$$, C, D$$^{+}$$, and E$$^{2+}. $$Which arrangement of relative radii is correct?

Accepted Answer

B$$^{-}$$ \u003e C \u003e D$$^{+}$$ \u003e A$$^{+}$$ \u003e E$$^{2+}$$

Question 3

Which intermolecular force is primarily responsible for the low boiling point of methane (CH$$_4$$)?

Accepted Answer

London dispersion forces

Question 4

Which of these ionic solids would have the largest lattice energy?

Accepted Answer

NaF

Question 5

Select the strongest bond in the following group.

Accepted Answer

C$$	ripleC$$

Question 6

The formal charge on sulfur in SO$$_2 is$$ ________, where the Lewis structure of the ion is: $$\begin{array}{c} :O: \quad \quad :O: \ \quad \quad || \ \quad \quad S \ \end{array}$$

Accepted Answer

-2

Question 7

Which property increases as you move from left to right across a period in the periodic table?

Accepted Answer

Electronegativity

Question 8

Compared to selenium, bromine has a ________ effective nuclear charge (Z$$_{eff}) $$and a ________ atomic radius.

Accepted Answer

higher; smaller

Question 9

Using condensed electron configurations, predict the ground state electron configuration of Te$$^{2-}.$$

Accepted Answer

[Kr] 5s$$^2 4d$^{10} 5p$^6$$

Question 10

Although I$$_2 is $$known, F$$_2^- is $$not. Which statement best explains this?

Accepted Answer

Fluorine is too electronegative to form a stable F$$_2^-$$ ion.

Question 11

What is the molecular geometry and hybridization of the central atom in PF$$_3$$?

Accepted Answer

Tetrahedral; sp$$^3$$

Question 12

Which molecule is polar?

Accepted Answer

NH$$_3$$

Question 13

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

Accepted Answer

$$109.5^\circ$$

Question 14

Which of the following best describes the electron-domain geometry of TeBr$$_4$$?

Accepted Answer

Trigonal bipyramidal

Question 15

Which of the following elements has the highest electronegativity?

Accepted Answer

Fluorine

Question 16

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

Accepted Answer

[Kr]

Question 17

Which of the following is a correct statement about the periodic trend in atomic radius?

Accepted Answer

Atomic radius decreases across a period.

Question 18

Which of the following molecules has a bond angle closest to $$120^\circ$$?

Accepted Answer

BF$$_3$$

Question 19

Which of the following is the best explanation for the high lattice energy of NaF compared to NaCl?

Accepted Answer

F$$^- is $$smaller than Cl$$^-$$, leading to stronger electrostatic attraction.

Question 20

Which of the following best describes the hybridization of the oxygen atom labeled 'y' in the molecule below?

H—C≡C—C—O—H
      |      |
      H      H

Accepted Answer

sp$$^3$$

General Chemistry II: Practice Exam 2 Study Guide

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드