Protons, Neutrons, And Electrons 7
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A helium atom has 2 protons and 2 neutrons in the nucleus.
| He |
| Helium |
What is the atomic number of helium?
1 2 3 4
(c) Copyright 1999. All rights reserved. 
(c) Copyright 1999. All rights reserved.
Tag » How Many Neutrons Are In Helium
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