There is one electron in a beta- particle, because a beta- particle is an electron and an electron antineutrino. A beta+ particle is a positron and an electron neutrino. A link can be found below to a related question that will help a bit in sorting out the puzzles surrounding beta particles.
One, the electron itself.
An electron is considered to be an elementary particle (or lepton), so there is only one particle in an electron.
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Nitrogen has 7 electrons
nitrogen has 5 valence electrons
A nitrogen atom has seven electrons.
Nitrogen atoms have two core electrons.
There are often 7 electrons in nitrogen except when the nitrogen is in its ion form; then it would have 10 electrons.
Nitrogen has five valence electrons.
There are 10 electrons in the ion of nitrogen (the 3- charged nitrogen).
A neutral nitrogen atom has seven electrons.
There is one lone pair of electrons on the nitrogen atom.
There are 3 valence electrons in the highest energy level of Nitrogen. Nitrogen has a total of 5 valence electrons.
Nitrogen is a chemical element not a particle.
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