Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 2: Problem 20

Define, with two examples, these terms: (a) alkali metals, (b) alkaline earth metals, (c) halogens, (d) noble gases.

Short Answer

Expert verified
Alkali metals are highly reactive elements with one valence electron and examples include Lithium and Sodium. Alkaline earth metals are less reactive than alkali metals, with two valence electrons; examples include Beryllium and Magnesium. Halogens are very reactive nonmetals that readily form salts, with seven valence electrons; examples include Fluorine and Chlorine. Noble gases are the least reactive group due to their full outer energy levels; examples include Helium and Neon.

Step by step solution

01

Definition and Example of Alkali Metals

Alkali metals are the elements located in Group 1 of the periodic table. They are very reactive due to having one valence electron in their outermost energy level which they tend to lose in order to have a stable electron configuration or noble gas configuration. An example of alkali metals are Lithium (Li) and Sodium (Na).
02

Definition and Example of Alkaline Earth Metals

Alkaline earth metals are the elements located in Group 2 of the periodic table. They are also reactive, but less so than alkali metals, as they have two valence electrons in their outermost energy level, which they tend to lose in reactions to achieve a stable electron configuration. Examples of such metals include Beryllium (Be) and Magnesium (Mg).
03

Definition and example of Halogens

Halogens are located in Group 17 of the periodic table. They are very reactive nonmetals that readily form salts. Halogens have seven valence electrons in their outermost energy level meaning they typically gain an electron to form a stable electron configuration. Examples of halogens include Fluorine (F) and Chlorine (Cl).
04

Definition and example of Nobel Gases

Noble gases are located in Group 18 of the periodic table. They are the least reactive group as they have a stable electronic configuration (full outer energy level). Examples of noble gases are Helium (He) and Neon (Ne).

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

Draw two different structural formulas based on the molecular formula \(\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}\). Is the fact that you can have more than one compound with the same molecular formula consistent with Dalton's atomic theory?

Compare the properties of: \(\alpha\) particles, cathode rays, protons, neutrons, and electrons. What is meant by the term "fundamental particle"?

Calculate the number of neutrons of \({ }^{239} \mathrm{Pu}\).

What is the mass number of an iron atom that has 28 neutrons?

Predict the formula and name of a binary compound formed from these elements: (a) \(\mathrm{Na}\) and \(\mathrm{H},\) (b) \(\mathrm{B}\) and \(\mathrm{O},(\mathrm{c}) \mathrm{Na}\) and \(\mathrm{S},(\mathrm{d}) \mathrm{Al}\) and \(\mathrm{F}\) (e) \(\mathrm{F}\) and \(\mathrm{O},\) (f) \(\mathrm{Sr}\) and \(\mathrm{Cl}\).
See all solutions

Recommended explanations on Chemistry Textbooks

Making Measurements

Read Explanation

Inorganic Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Nuclear Chemistry

Read Explanation

Chemistry Branches

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