___________ Contains _________&_________
_______ Can hold up to___ electrons.
______ Can hold up to___ electrons.
______ Can hold up to ___electrons.
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Nucleus
Protons Neutrons
+ =
+
Mass
2nd E.L.
3rd E.L.
1st E.L.
18
8
2
Energy levels, Electron Cloud, Electron shells
-
Number of protons tells me the element’s atomic number & element name
X
X
X
X
X
X
X
X
X
Subatomic particles
1amu
1amu
Element Name | Atomic # | Atomic Mass | Mass # | # of protons | # of electrons | # of neutrons | Bohr Model |
| | | | | | | |
Atomic number=Protons=Electrons
Atomic Mass- Atomic Number = Neutrons
(protons)