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Atoms

Across
They cannot touch.
They have a negative charge.
The atomic number is 5.
The __ for oxygen is 8.
Clouds in an atom.
The center of an atom.
They symbol is Sn.
O is the __ for oxygen.
The symbol is Ar.
The symbol is Fe.
Down
The atomic number is 29.
Si is a __.
The __ has all of the elements on it.
The symbol is Pb.
The atomic mass is 87.62.
The atomic number is 4.
The atomic number is 20.
The atomic number is 16.
The atomic number is 8.
The first unit we covered was on...