bohr model: meaning, definition, pronunciation and examples
C2Academic, Technical, Historical
Quick answer
What does “bohr model” mean?
A simplified model of the atom in which electrons orbit the nucleus in fixed, circular paths (shells) with specific energy levels.
Audio
Pronunciation
Definition
Meaning and Definition
A simplified model of the atom in which electrons orbit the nucleus in fixed, circular paths (shells) with specific energy levels.
A conceptual framework in atomic physics, proposed by Niels Bohr in 1913, that combines classical mechanics with early quantum theory to explain the discrete energy levels of electrons and the spectral lines of hydrogen. It is a foundational but outdated historical model.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage or spelling. The pronunciation of 'Bohr' may show slight variation.
Connotations
Identical connotations: a foundational, simplified, and historically important model in physics education.
Frequency
Equal frequency in academic and educational contexts in both varieties.
Grammar
How to Use “bohr model” in a Sentence
the Bohr model of [NOUN PHRASE]According to the Bohr model, ...In the Bohr model, electrons...Bohr model for [ELEMENT]Vocabulary
Collocations
Examples
Examples of “bohr model” in a Sentence
verb
British English
- The theory was later bohr-modelled to account for new data. (extremely rare/non-standard)
American English
- They attempted to Bohr-model the complex atom. (extremely rare/non-standard)
adjective
British English
- The Bohr-model description is sufficient for GCSE chemistry. (attributive use)
American English
- He drew a Bohr-model diagram on the whiteboard. (attributive use)
Usage
Meaning in Context
Business
Not used.
Academic
Used in physics, chemistry, and history of science courses to explain the development of atomic theory.
Everyday
Virtually never used in everyday conversation.
Technical
Used as a specific historical reference point or a teaching tool in introductory physics and chemistry.
Vocabulary
Synonyms of “bohr model”
Strong
Neutral
Weak
Vocabulary
Antonyms of “bohr model”
Watch out
Common Mistakes When Using “bohr model”
- Writing it in lowercase ('bohr model').
- Using it to describe atoms with many electrons where it fails.
- Confusing it with the Rutherford model, which it refined.
FAQ
Frequently Asked Questions
Danish physicist Niels Bohr proposed the model in 1913.
No, it is a historical model. It was superseded by the quantum mechanical model in the 1920s, but it remains a useful teaching tool for introducing quantised energy levels.
It introduced the idea that electrons occupy specific, stable orbits (shells) with fixed energy levels, preventing them from spiralling into the nucleus as classical physics predicted.
No, it only accurately predicts the behaviour of hydrogen and other single-electron ions (like He⁺). It fails for multi-electron atoms.
A simplified model of the atom in which electrons orbit the nucleus in fixed, circular paths (shells) with specific energy levels.
Bohr model is usually academic, technical, historical in register.
Bohr model: in British English it is pronounced /ˈbɔː ˌmɒd.əl/, and in American English it is pronounced /ˈbɔːr ˌmɑː.dəl/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of Bohr as 'BORE-ing' a hole. The Bohr model 'bores' electrons into fixed circular tracks around the nucleus, like a train on a track.
Conceptual Metaphor
THE ATOM IS A SOLAR SYSTEM (nucleus as sun, electrons as planets in orbits).
Practice
Quiz
What was a key limitation of the Bohr model?