nucleon
C2Pronunciation
UK
- /njˈuːklɪən/
US
- /nˈuːklɪən/
Description
- particle in an atomic nucleus
- proton or neutron
- part of an atom's center
At the center of an atom is the nucleus, and inside that center are particles called nucleons. A proton is one kind, and a neutron is the other. These particles make up the main mass of an atom and play a key role in what an atom is like.
Scientists study nucleons to understand atomic structure and nuclear physics. You probably will not hear this word in daily conversation, but it is very important in science when people talk about the inside of atoms.
Deep within every atom lies its nucleus, a dense core packed with particles called nucleons. The word itself comes from "nucleus" and the suffix "-on," indicating these are the fundamental constituents of the nucleus. But it's not just one type of particle; there are two: protons and neutrons.
Think of it like building with LEGO bricks. Protons and neutrons are your basic brick shapes, and different combinations create different atoms. The number of protons determines what element an atom is (like hydrogen, oxygen, or gold), while the number of neutrons affects its stability and weight, creating what we call isotopes.
The study of nucleons is central to nuclear physics. Scientists are interested not only in the fact that they exist but also in how they interact with each other through the strong nuclear force, the "glue" that holds the nucleus together despite the protons' natural electrical repulsion. Understanding these interactions helps us explore the origins of the universe, develop energy sources like nuclear power, and create medical isotopes for diagnosis and treatment.
While you won't typically use "nucleon" in everyday conversation, it's a crucial term for anyone delving into the world of atomic structure and the fundamental building blocks of matter. It represents the very heart of what makes up everything around us—from the smallest dust particle to the largest star.
Examples
- 1
Particle types
A proton is one kind of nucleon, and a neutron is the other.
- 2
Atomic nucleus
The paper describes how a nucleon behaves inside a dense atomic nucleus.
- 3
Collision energy
Physicists often report the collision energy in gigaelectronvolts per nucleon.
Phrase
per nucleon
for each nucleon, not for the whole atom or ion
Forms and spellings
1 form open this card.
Main spelling
- nucleonnoun