Proton

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A proton is a subatomic particle found in the nucleus of every atom, carrying a positive electrical charge equal in magnitude to the electron's negative charge.

The number of protons in an atom's nucleus determines which element it is—hydrogen has one, helium two, carbon six.

In chemistry and physics, proton often appears in discussions of atomic structure, nuclear reactions, and particle physics: Proton therapy uses proton beams to treat cancer.

physics

neutron

Uncharged nuclear particle

atom · hadron · baryon · positron · particle · charge · mass · spin · antiproton · gluon

accelerator

LHC

Massive subatomic collision facility

  • CERNEuropean nuclear research organization
  • beamStructural support member
  • collisionForceful contact between objects

synchrotron · cyclotron · Higgs · smash · accelerate · detector · energy · magnetic · particle physics · experiment

chemistry

hydrogen ion

Lone proton, no electron

  • acidLow-pH chemical compound
  • pHMeasure of solution acidity
  • donorOne who contributes freely

cation · ionization · electrolyte · conjugate · dissociation · buffer · titration · acidic · catalyst · reaction

medical

therapy

Curative mental treatment

cancer · treatment · beam · dose · cyclotron · irradiation · precision · gantry · targeting · imaging

brand

Malaysian

From a Southeast Asian nation

export · assembly · vehicle · engine

Categories
Opposites
electric charge (subatomic particles)

Protonelectron

Negative subatomic particle

antiproton · anion · negative charge · beta particle

atomic structure role

Protonelectron

Negative subatomic particle

electron cloud · valence electron

baryon vs. lepton

Protonelectron

Negative subatomic particle

lepton · neutrino · muon

Phrases
Family

proto, protocol, protoplasm, protozoa, protozoan, protein, protean, protagonist, prototype

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Rated G