ionic bond
C1Academic / Technical (Chemistry)
Definition
Meaning
A chemical bond formed between two ions with opposite electrical charges, typically involving the transfer of electrons from a metal atom to a non-metal atom.
In chemistry, an ionic bond is the electrostatic attraction that holds positively charged cations and negatively charged anions together in a crystal lattice or molecule. It is a fundamental concept describing the structure of salts and many inorganic compounds.
Linguistics
Semantic Notes
The term is specific to chemistry. It refers to a bond type, not the process. While 'ionic bonding' describes the process, 'ionic bond' refers to the resultant attraction or connection. It is often contrasted with 'covalent bond'.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or definitional differences. Pronunciation differences follow general BrE/AmE patterns for the words 'ionic' and 'bond'.
Connotations
Identical technical meaning. The term carries no regional connotative variation.
Frequency
Frequency is identical in academic chemistry contexts in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
The [metal] and [non-metal] form an ionic bond.An ionic bond exists between [cation] and [anion].[Compound] is held together by ionic bonds.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None. The term is purely technical.”
Usage
Context Usage
Business
Not used in standard business contexts.
Academic
Core terminology in chemistry, materials science, and related STEM fields. Used in textbooks, research papers, and lectures.
Everyday
Rarely used outside of educational contexts. Might appear in simplified explanations (e.g., 'table salt is held together by ionic bonds').
Technical
Precise term in chemical engineering, pharmacology (salt formation), and materials design.
Examples
By Part of Speech
verb
British English
- The sodium and chlorine ions ionicly bond to form a crystal lattice.
- These elements do not readily ionicly bond under standard conditions.
American English
- The sodium and chlorine ions ionically bond to form a crystal lattice.
- These elements do not readily ionically bond under standard conditions.
adverb
British English
- The atoms are bonded ionically.
- The compound is ionically bonded.
American English
- The atoms are bonded ionically.
- The compound is ionically bonded.
adjective
British English
- The ionic-bond character of the compound is high.
- We studied ionic-bond properties in the lab.
American English
- The ionic bond character of the compound is high.
- We studied ionic bond properties in the lab.
Examples
By CEFR Level
- Table salt has an ionic bond.
- An ionic bond is very strong.
- Sodium and chlorine form an ionic bond to make salt.
- Ionic bonds usually form between metals and non-metals.
- The ionic bond in magnesium oxide is stronger than that in sodium chloride due to higher charges on the ions.
- When an ionic bond forms, one atom loses electrons and becomes positively charged.
- The lattice energy is a direct measure of the strength of the ionic bonds within a crystalline solid.
- While predominantly covalent, the molecule exhibits some ionic bond character due to the significant electronegativity difference.
Learning
Memory Aids
Mnemonic
Think 'I on it' → Ions are ON it. An ionic bond is where IONS stick to each other due to opposite charges.
Conceptual Metaphor
A magnetic attraction (like opposite poles of magnets sticking together). A 'give and take' relationship (one atom gives electrons, the other takes).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'ionic link' ('ионная связь' is correct). Do not confuse with 'covalent bond' ('ковалентная связь').
Common Mistakes
- Pronouncing 'ionic' as 'eye-on-ick' /ˈaɪ.ɒn.ɪk/ is common; standard is /aɪˈɒn.ɪk/. Saying 'ionic bonding' when referring to the static bond itself. Misidentifying bonds in compounds like HCl (gaseous) as ionic; they are covalent.
Practice
Quiz
Which of the following best describes an ionic bond?
FAQ
Frequently Asked Questions
No. An ionic bond involves the transfer of electrons and attraction between ions. A covalent bond involves the sharing of electron pairs between atoms.
Ionic bonds typically form between metals (which lose electrons to form cations) and non-metals (which gain electrons to form anions).
Ionic bonds are generally strong, which is why ionic compounds like NaCl have high melting and boiling points. However, their strength can vary based on ion charge and size.
Typically, ionic bonds form extensive crystal lattices, not discrete molecules. However, in the gas phase, ion pairs like Na⁺Cl⁻ can be considered molecules held together by an ionic bond.