Neutron Meaning
/ˈn(j)uː.tɹɒn/Definition, CEFR level B2, pronunciation, examples, and quiz.
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Definition
nounA subatomic particle forming part of the nucleus of an atom and having no charge; it is a combination of an up quark and two down quarks.
Sentence Examples
Magnetars are a type of neutron star with powerful magnetic fields.
The strong force is responsible for 99% of proton and neutron mass.
CEFR Practice Quiz
A subatomic particle with no electric charge found in the nucleus is called a ____.
CEFR Practice Quiz (Alternate)
The nucleus of an atom contains protons and ____ tied together by strong forces.
Word Origin & History
From neutral + -on; by surface analysis, neutr(o)- + -on. Coined by Scottish-Australian physicist William Sutherland in 1899 in a paper in the Philosophical Magazine. Subsequent usage was sporadic and theoretical, sometimes referring to neutrinos rather than neutrons, and the modern sense was reintroduced alongside proton by Ernest Rutherford in 1920.
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CEFR Practice Quiz
A subatomic particle with no electric charge found in the nucleus is called a ____.
CEFR Practice Quiz (Alternate)
The nucleus of an atom contains protons and ____ tied together by strong forces.