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Atoms

Across
A method used to identify an atom based on its neutrons, protons, and electrons in 4 different levels
A way of identifying atoms based on their electrons and where they are located in the 7 different levels and subdivisions
These are two of the same elements with different masses
The particle in an atom with a positive charge that is located in the nucleus
Down
The name of the rule that determines which order each electron during electron configuration
The particle in an atom with zero charge that is located in the nucleus
The particle in an atom with a negative charge located in a cloud around the nucleus
This is measured by adding the amount of protons and neutrons