Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 2: Problem 52

Using the periodic table, predict the charges of the ions of the following elements: (a) Ga, (b) \(\mathrm{Sr},(\mathrm{c}) \mathrm{As}\) (d) \(\mathrm{Br}\) (e) Se.

Short Answer

Expert verified
The charges of the ions for the given elements are: (a) Gallium (Ga): Ga³⁺, (b) Strontium (Sr): Sr²⁺, (c) Arsenic (As): As³⁻, (d) Bromine (Br): Br⁻, and (e) Selenium (Se): Se²⁻.

Step by step solution

01

(a) Gallium (Ga)

To predict the charge of Ga ion, we first find its position in the periodic table. Gallium is located in Group 13 (or IIIA) of the periodic table. Elements in this group usually have three valence electrons. In order to reach a stable electron configuration, elements in Group 13 tend to lose three electrons to form ions with a +3 charge. Therefore, the most common ion of gallium is Ga³⁺.
02

(b) Strontium (Sr)

Strontium is located in Group 2 (or IIA) of the periodic table. Elements in this group have two valence electrons. In order to achieve a stable electron configuration, elements in Group 2 tend to lose two electrons to form ions with a +2 charge. Therefore, the most common ion of strontium is Sr²⁺.
03

(c) Arsenic (As)

Arsenic is located in Group 15 (or VA) of the periodic table. Elements in this group have five valence electrons. In order to achieve a stable electron configuration, elements in Group 15 tend to gain three electrons to form ions with a -3 charge. Therefore, the most common ion of arsenic is As³⁻.
04

(d) Bromine (Br)

Bromine is located in Group 17 (or VIIA) of the periodic table. Elements in this group are known as halogens, and they have seven valence electrons. In order to achieve a stable electron configuration, halogens tend to gain one electron to form ions with a -1 charge. Therefore, the most common ion of bromine is Br⁻.
05

(e) Selenium (Se)

Selenium is located in Group 16 (or VIA) of the periodic table. Elements in this group have six valence electrons. In order to achieve a stable electron configuration, elements in Group 16 tend to gain two electrons to form ions with a -2 charge. Therefore, the most common ion of selenium is Se²⁻.

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

Provide the name or chemical formula, as appropriate, for each of the following acids: (a) hydroiodic acid, (b) chloric acid, (c) nitrous acid, \((\mathrm{d}) \mathrm{H}_{2} \mathrm{CO}_{3},(\mathrm{e}) \mathrm{HClO}_{4},\) (f) \(\mathrm{CH}_{3} \mathrm{COOH}\)

(a) What is the mass in amu of a carbon-12 atom? (b) Why is the atomic weight of carbon reported as 12.011 in the table of elements and the periodic table in the front inside cover of this text?

Complete the table by filling in the formula for the ionic compound formed by each pair of cations and anions, as shown for the first pair. $$ \begin{array}{|l|c|c|c|c|} \hline \text { Ion } & \mathrm{K}^{+} & \mathrm{NH}_{4}^{+} & \mathrm{Mg}^{2+} & \mathrm{Fe}^{3+} \\ \hline \mathrm{Cl}^{-} & \mathrm{KCl} & & & \\ \hline \mathrm{OH}^{-} & & & & \\ \hline \mathrm{CO}_{3}^{2-} & & & & \\ \hline \mathrm{PO}_{4}{ }^{3-} & & & & \\ \hline \end{array} $$

(a) What do ethane and ethanol have in common? (b) How does 1 -propanol differ from propane?

The explosion of an atomic bomb releases many radioactive isotopes, including strontium-90. Considering the location of strontium in the periodic table, suggest a reason for the fact that this isotope is particularly harmful to humans.
See all solutions

Recommended explanations on Chemistry Textbooks

Chemistry Branches

Read Explanation

Chemical Reactions

Read Explanation

Nuclear Chemistry

Read Explanation

Making Measurements

Read Explanation

Kinetics

Read Explanation

Organic 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.

Sign-up for free