/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 52 For each of the following groups... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 12: Problem 52

For each of the following groups, which metal would you expect to have the highest melting point: (a) gold, rhenium, or cesium; (b) rubidium, molybdenum, or indium; (c) ruthenium, strontium, or cadmium?

Short Answer

Expert verified
The metals with the highest melting points in each group are (a) rhenium, (b) molybdenum, and (c) ruthenium. This is due to their positions in the periodic table, with transition metals generally having stronger metallic bonds and higher melting points compared to alkali and alkaline earth metals.

Step by step solution

01

(a) Gold, Rhenium, or Cesium

In this group, gold (Au) and rhenium (Re) are transition metals, while cesium (Cs) is an alkali metal. Since transition metals tend to have higher melting points due to stronger metallic bonds, we can eliminate cesium. Between gold and rhenium, we can look at their positions in the periodic table. Rhenium is closer to the center and lower down in the table than gold, which indicates that its metallic bonds are stronger. Therefore, rhenium is expected to have the highest melting point in this group.
02

(b) Rubidium, Molybdenum, or Indium

In this group, molybdenum (Mo) is a transition metal, while rubidium (Rb) is an alkali metal and indium (In) is part of the p-block. As we mentioned earlier, transition metals generally have higher melting points. Therefore, we can first eliminate rubidium. Comparing molybdenum and indium, molybdenum is a transition metal, placing it in a better position for stronger metallic bonds. Therefore, molybdenum is expected to have the highest melting point in this group.
03

(c) Ruthenium, Strontium, or Cadmium

In this group, ruthenium (Ru) and cadmium (Cd) are transition metals, while strontium (Sr) is an alkaline earth metal. We can eliminate strontium for being an alkaline earth metal. Comparing ruthenium and cadmium, ruthenium is closer to the center and lower down in the periodic table, indicating stronger metallic bonds in its crystal lattice. Therefore, ruthenium is expected to have the highest melting point in this group.

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

The first LEDs were made from GaAs, which has a band gap of \(1.43 \mathrm{eV}\). What wavelength of light would be emitted from an LED made from GaAs? What region of the electromagnetic spectrum does this light correspond to: ultraviolet, visible, or infrared?

The coordination number for \(\mathrm{Mg}^{2+}\) ion is usually six. Assuming this assumption holds, determine the anion coordination number in the following compounds: (a) \(\mathrm{MgS}_{\text {, }}\) (b) \(\mathrm{MgF}_{2}\), (c) \(\mathrm{MgO}\).

\(\mathrm{KCl}\) has the same structure as \(\mathrm{NaCl}\). The length of the unit cell is \(6.28 \AA \AA\). The density of \(\mathrm{KCl}\) is \(1.984 \mathrm{~g} / \mathrm{cm}^{3}\), and its formula mass is \(74.55\) amu. Using this information, calculate Avogadro's number.

Indicate whether each statement is true or false: (a) The band gap of a semiconductor decreases as the particle size decreases in the 1-10-nm range. (b) The light that is emitted from a semiconductor, upon external stimulation, becomes longer in wavelength as the particle size of the semiconductor decreases.

Unlike metals, semiconductors increase their conductivity as you heat them (up to a point). Suggest an explanation.
See all solutions

Recommended explanations on Chemistry Textbooks

The Earths Atmosphere

Read Explanation

Chemistry Branches

Read Explanation

Nuclear Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Making Measurements

Read Explanation

Physical Chemistry

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.