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What is in a atom?

Updated: 8/16/2019
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11y ago

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  • negatively charged

Protons are found with neutrons packed tightly in the nucleus.

Surrounding the nucleus is the electron cloud, where, of course, electrons are found.

Need more info. and research? Read on...An electron can also come from the nucleus IF an atom undergoes transmutation (changes into a different kind of atom).

Atoms "add up" to elements. Elements are made of one type of atom.

Gold is made of gold atoms, silver of silver atoms. If the atom undergoes transmutation, this means a proton has left the nucleus. The atom is no longer a "gold" or "silver" atom. This happens to unstable atoms.

Still Not Enough? More research:isotope - one of 2 or more atoms with the same atomic number (number of protons), but with different numbers of neutrons

(i.e. the isotopes of carbon are carbon-12, carbon-13, and carbon-14. They all have 6 protons, and different numbers of neutrons.)

The number in carbon-12 is the mass number. The mass number = protons + neutrons. (Electrons have virtually no mass or weight, so they do not effect the the mass number.)

Unstable AtomsAtoms become unstable when there are more electrons then protons (or vice-versa). This will cause radioactive decay.

Radioactive decay is when an atom loses particles and the atom undergoes transmutation.

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