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Science 4.1

4.1 parts of an atom/Bohr model

Number of protons in an atom = number of _________ in an atom Number of electrons in an atom
Atomic number = the number of ___________ in an atom number of protons in an atom
Mass number = number of _________ + number of _________ protons + neutrons
What are the electrons in the outermost energy level called? valence electrons
Which electrons have the most energy? valence electrons
What makes an atom stable? Having a full outer shell
How many electrons can the first level hold? The second and 3rd levels? 1 8
How do you find the number of neutrons in an atom? Mass number - number of neutrons
What happens if the outer shell of an atom is not full? It will bond with another atom, by gaining or losing electrons.
Created by: mtnbrook