BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 3, Problem 36E
Textbook Problem
31 views

What is the electron configuration of Mg 2+ ? How does its reactivity compare with neutral Mg? How do the reactivities of F - and F compare?

Interpretation Introduction

Interpretation:

The reactivity of Mg2+ and F is to be compared with Mg and F.

Concept Introduction:

As per Bohr’s model of the atom, electrons are arranged in orbits. Orbits are circular paths that electrons revolve in, around the nucleus. There can be a maximum of two electrons in the first orbit; eight electrons in the second orbit and third orbit while eighteen in the fourth orbit.

The arrangement of electrons in orbits is termed as the electronic configuration. Atoms in which the orbits are completely filled are the least chemically reactive while those in which orbits are incomplete are chemically reactive.

The electrons present in the outer most orbit in the electronic configuration are called valence electrons and that orbit is termed as the valence orbit.

Reactive elements which are short of or exceed completely filled valence orbits by a maximum of three electrons tend to gain or lose the required number of electrons. This converts those atoms into ions. These ions are comparatively less reactive than their parent atom.

The atoms which gain the electrons get negatively charged and are termed as anions while those which lose electrons get positively charged and are termed as cations. The electrons are lost or gained in the valence orbit only.

Explanation of Solution

Mg contains 12 electrons. Its electronic configuration is 2, 8, 2. It has two valence electrons and exceeds completely filled valence shell electronic configuration by just two electrons. So, on losing two electrons, the valence orbit will have eight electrons. On losing those two valence electrons, Mg2+ is formed. Its electronic configuration is 2, 8. It has a completely filled valence shell

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 3 Solutions

Chemistry In Focus
Show all chapter solutions
add
Ch. 3 - Based on their electron configurations, which of...Ch. 3 - Which pair of elements do you expect to be most...Ch. 3 - Which statement is true of the quantum mechanical...Ch. 3 - Why is it important to understand atoms?Ch. 3 - Describe an atom.Ch. 3 - What defines an element? How many naturally...Ch. 3 - List three different ways that chemical elements...Ch. 3 - Use the periodic table to write the name and the...Ch. 3 - Define each term: a. atomic number b. mass number...Ch. 3 - Write the mass and charge of the proton, neutron,...Ch. 3 - What is the periodic law?Ch. 3 - What was Mendeleevs largest contribution to the...Ch. 3 - Explain the Bohr model for the atom. How does the...Ch. 3 - Explain the quantum mechanical model for the atom....Ch. 3 - Give two examples of each: a. alkali metal b....Ch. 3 - Which elements exist as diatomic molecules?Ch. 3 - Explain the difference and similarity between...Ch. 3 - Determine the charge of each ion: a rubidium atom...Ch. 3 - Determine the charge of each of the following: a...Ch. 3 - Determine the number of protons and electrons in...Ch. 3 - Determine the number of protons and electrons in...Ch. 3 - Give the atomic number (Z) and the mass number (A)...Ch. 3 - Give the atomic number (Z) and mass number (A) for...Ch. 3 - The following isotopes have applications in...Ch. 3 - The following isotopes are important in nuclear...Ch. 3 - 14C is used in carbon dating of artifacts....Ch. 3 - 40K is used to measure the age of Earth. Determine...Ch. 3 - Determine the number of protons, neutrons, and...Ch. 3 - Determine the number of protons, neutrons, and...Ch. 3 - Give electron configurations according to the Bohr...Ch. 3 - Give electron configurations according to the Bohr...Ch. 3 - How many valence electrons are in each of the...Ch. 3 - How many valence electrons are in each element of...Ch. 3 - Draw electron configurations for each of the...Ch. 3 - Draw electron configurations for each of the...Ch. 3 - Which two of the following elements would you...Ch. 3 - Group the following elements into three similar...Ch. 3 - We have seen that the reactivity of an element is...Ch. 3 - What is the electron configuration of Mg2+? How...Ch. 3 - Classify each of the following elements as a...Ch. 3 - Classify each of the following as a metal, a...Ch. 3 - Calculate the atomic mass of neon (Ne), which is...Ch. 3 - An element has two naturally occurring isotopes....Ch. 3 - A fictitious element has two naturally occurring...Ch. 3 - Copper has two naturally occurring isotopes. Cu-63...Ch. 3 - How many moles of titanium are present in 124 g of...Ch. 3 - How many moles of carbon are there in a diamond...Ch. 3 - How many moles are there in each sample? a. 45 mg...Ch. 3 - How many moles are there in each sample? a. 55.0 g...Ch. 3 - What is the mass of each sample? a.1.8 mol S...Ch. 3 - What is the mass of each sample? a.2.75 mol Fe...Ch. 3 - Determine the number of atoms in each sample....Ch. 3 - Determine the number of atoms in each sample....Ch. 3 - How many Ag atoms are present in a piece of pure...Ch. 3 - How many platinum atoms are in a pure platinum...Ch. 3 - A pure gold necklace has a volume of 1.8cm3. How...Ch. 3 - A titanium bicycle component has a volume of...Ch. 3 - An iron sphere has a radius of 3.4 cm. How many...Ch. 3 - Calculate the number of atoms in the universe. The...Ch. 3 - The introduction to this chapter states that...Ch. 3 - Suppose the absolute value of the charge of the...Ch. 3 - When we refer to doughnuts or cookies, we often...Ch. 3 - Draw 101 squares on a piece of paper and time...Ch. 3 - Why does Avogadros number have such an odd value?...Ch. 3 - Can you think of anything that is not composed of...Ch. 3 - Explain the connection between the properties of...Ch. 3 - Read the interest box in this chapter entitled...Ch. 3 - Here are three fictitious elements and a molecular...Ch. 3 - Read the box entitled What if . . . Complexity Out...Ch. 3 - Gather any two of the following items, measure...

Additional Science Textbook Solutions

Find more solutions based on key concepts
Show solutions add
The length of time a person must spend exercising in order to meet the Physical Activity Guidelines for America...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Even a small loss of body weight can improve OA.

Nutrition Through The Life Cycle

How can errors in the cell cycle lead to cancer in humans?

Human Heredity: Principles and Issues (MindTap Course List)

Consider a skydive r who has stepped from a helicopter and is falling through air. Before she reaches terminal ...

Physics for Scientists and Engineers, Technology Update (No access codes included)

What organisms can affect coastal configuration?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin