IB Chemistry Topic S2.1.2 Ionic Bonds and Binary Compounds Revision Notes (SL/HL)

IB Chemistry Topic S2.1.2 Ionic Bonds and Binary Compounds Revision Notes (SL/HL) | RevisionDojo

Written by official IB examiners

Formation of the Ionic Bond: Electrostatic Attraction Between Opposites

Definition

Octet rule

Atoms are driven by their quest for stability, often achieved by attaining a noble gas electron configuration, commonly referred to as the octet rule.

How Ionic Bonds Form

When a metal and a non-metal interact, the metal atom transfers one or more electrons to the non-metal atom.
This transfer creates oppositely charged ions that are held together by electrostatic forces, the attraction between positive and negative charges.
This force is the essence of an ionic bond.

Definition

Ionic bond

An ionic bond is the electrostatic force of attraction between a positively charged metal ion and a negatively charged non-metal ion.

Example

Formation of Sodium Chloride ($ \text{NaCl} $)

A sodium atom ($ \text{Na} $) loses one electron, becoming a sodium ion ($ \text{Na}^+ $).
A chlorine atom ($ \text{Cl} $) gains that electron, becoming a chloride ion ($ \text{Cl}^- $).
The $ \text{Na}^+ $ and $ \text{Cl}^- $ ions are then attracted to each other, forming the ionic compound sodium chloride.

Naming Binary Ionic Compounds: Cation First, Anion Second

When naming ionic compounds, the cation (positive ion) is always named first, followed by the anion (negative ion).
The name of the cation is the same as the name of the metal, while the name of the anion is derived from the non-metal with the suffix -ide.

Example

$ \text{NaCl} $: Sodium chloride
$ \text{MgO} $: Magnesium oxide
$ \text{AlN} $: Aluminium nitride

Common Mistake

Do not reverse the naming order.
Always name the cation first, and note that it is usually written to the left of the anion in the chemical formula.

Active recall

What is the name of the compound $ \text{CaS} $?

Polyatomic Ions: Groups of Atoms Acting as a Single Ion

Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

IB Chemistry S2.1.2 Ionic Bonds and Binary Compounds Notes

Formation of the Ionic Bond: Electrostatic Attraction Between Opposites

How Ionic Bonds Form

Formation of Sodium Chloride ($ \text{NaCl} $)

Naming Binary Ionic Compounds: Cation First, Anion Second

Polyatomic Ions: Groups of Atoms Acting as a Single Ion

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Formation of the Ionic Bond: Electrostatic Attraction Between Opposites

How Ionic Bonds Form

Formation of Sodium Chloride ($ \text{NaCl} $)

Naming Binary Ionic Compounds: Cation First, Anion Second

Polyatomic Ions: Groups of Atoms Acting as a Single Ion

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

IB Chemistry S2.1.2 Ionic Bonds and Binary Compounds Notes

Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

Formation of the Ionic Bond: Electrostatic Attraction Between Opposites

How Ionic Bonds Form

Formation of Sodium Chloride ($ \text{NaCl} $)

Naming Binary Ionic Compounds: Cation First, Anion Second

Polyatomic Ions: Groups of Atoms Acting as a Single Ion

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Formation of the Ionic Bond: Electrostatic Attraction Between Opposites

How Ionic Bonds Form

Formation of Sodium Chloride ($ \text{NaCl} $)

Naming Binary Ionic Compounds: Cation First, Anion Second

Polyatomic Ions: Groups of Atoms Acting as a Single Ion

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account