Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 11: Problem 55

Classify the solid state of the following substances as ionic crystals, covalent crystals, molecular crystals, or metallic crystals: (a) \(\mathrm{CO}_{2},\) (b) \(\mathrm{B}_{12},\) (c) \(\mathrm{S}_{8}\), (d) \(\mathrm{KBr}\) (e) \(\mathrm{Mg}\), (f) \(\mathrm{SiO}_{2},(\mathrm{~g}) \mathrm{LiCl}\) (h) Cr.

Short Answer

Expert verified
(a) \(\mathrm{CO}_{2}\) is a molecular crystal, (b) \(\mathrm{B}_{12}\) is a covalent crystal, (c) \(\mathrm{S}_{8}\) is molecular crystal, (d) \(\mathrm{KBr}\) is an ionic crystal, (e) \(\mathrm{Mg}\) is a metallic crystal, (f) \(\mathrm{SiO}_{2}\) is a covalent crystal, (g) \(\mathrm{LiCl}\) is an ionic crystal, and (h) Cr is a metallic crystal.

Step by step solution

01

Classifying CO2

\(\mathrm{CO}_{2}\) is a molecule made up of covalent bonds, with weak forces between molecules. Therefore, \(\mathrm{CO}_{2}\) is a molecular crystal.
02

Classifying B12

\(\mathrm{B}_{12}\) is a covalently bonded network of atoms. Therefore, \(\mathrm{B}_{12}\) is a covalent crystal.
03

Classifying S8

\(\mathrm{S}_{8}\) is a molecule held together by covalent bonds and the crystal consists of these molecules. Therefore, \(\mathrm{S}_{8}\) is a molecular crystal.
04

Classifying KBr

\(\mathrm{KBr}\) is an ionic compound composed of potassium \(K^+\) and bromine ions \(Br^-\). Therefore, \(\mathrm{KBr}\) is an ionic crystal.
05

Classifying Mg

Magnesium (Mg) is a metal. Therefore, it is a metallic crystal.
06

Classifying SiO2

\(\mathrm{SiO}_{2}\) is made up of a network of covalently bonded atoms. Therefore, \(\mathrm{SiO}_{2}\) is a covalent crystal.
07

Classifying LiCl

\(\mathrm{LiCl}\) is an ionic compound composed of lithium \(Li^+\) and chloride ions \(Cl^-\). Therefore, \(\mathrm{LiCl}\) is an ionic crystal.
08

Classifying Cr

Chromium (Cr) is a metal. Therefore, it is a metallic crystal.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

At \(-35^{\circ} \mathrm{C}\), liquid \(\mathrm{HI}\) has a higher vapor pressure than liquid HF. Explain.

Barium metal crystallizes in a body-centered cubic lattice (the Ba atoms are at the lattice points only). The unit cell edge length is \(502 \mathrm{pm},\) and the density of the metal is \(3.50 \mathrm{~g} / \mathrm{cm}^{3}\). Using this information, calculate Avogadro's number. [Hint: First calculate the volume (in \(\mathrm{cm}^{3}\) ) occupied by 1 mole of Ba atoms in the unit cells. Next calculate the volume (in \(\mathrm{cm}^{3}\) ) occupied by one Ba atom in the unit cell. Assume that \(68 \%\) of the unit cell is occupied by Ba atoms.

Vapor pressure measurements at several different temperatures are shown below for mercury. Determine graphically the molar heat of vaporization for mercury. $$ \begin{array}{llllll} t\left({ }^{\circ} \mathrm{C}\right) & 200 & 250 & 300 & 320 & 340 \\ P(\mathrm{mmHg}) & 17.3 & 74.4 & 246.8 & 376.3 & 557.9 \end{array} $$

A student hangs wet clothes outdoors on a winter day when the temperature is \(-15^{\circ} \mathrm{C}\). After a few hours, the clothes are found to be fairly dry. Describe the phase changes in this drying process.

Use the concept of intermolecular forces to explain why the far end of a walking cane rises when one raises the handle.
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Read Explanation

Chemical Analysis

Read Explanation

Inorganic Chemistry

Read Explanation

Making Measurements

Read Explanation

Nuclear Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free