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What particles make up the nucleus of an atom?

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asked Mar 17, 2016 in Science and Nature by Quinn24
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The atom is the smallest material form capable of independent structure and cohesion. Atoms are made up of subatomic particles. These are electrons, protons and neutrons. Electrons are negatively charged and orbit the nucleus of an atom, which is made up of protons and neutrons.

Protons are positively charged, and thus repel each other. Neutrons have no charge and are thought to be a binding agent that keeps protons together. It is the specific number of protons and neutrons within a nucleus that determines the characteristics of atoms, as well as their placement on the Periodic Table.



answered Mar 17, 2016 by Topher (27,830 points)
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Atoms are considered to be the building blocks of "ordinary" matter. A single atom is made up of a central nucleus with electrons around the outside.


So what's in the nucleus? 


There are two types of particle in the nucleus of an atom: the proton and the neutron. The proton has a positive charge. The number of protons in a nucleus is the same for all the atoms of a particular element. It corresponds to the atomic number of that element. For example, if a nucleus contains three protons, then it is part of an atom of lithium (atomic number 3).


The neutron has a similar mass to the proton but has no charge. The neutrons help keep the nucleus together.




[1] http://resources.schoolscience.co.uk/STFC/16plus/partich1pg2.html

[2] http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/atoms_radiation/atomicstrucrev1.shtml

[3] http://www.siyavula.com/gr7-9-websites/natural-sciences

answered Mar 21, 2016 by benbailey (5,400 points)

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