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Atomic Structure

Across
Contains 12 protons
The Atomic ____ is the number of (3 Down) in an (2 Down)
Molecules that have the same number of protons but a different number of neutrons
Building block of the Universe
Negatively charged particle
A particle consisting of several atoms
The centre of the atom
Down
A molecule that only contains one type of atom
Positively charged particle
Neutrally charged particle
The ____ Table contains the atomic information of all (2 Down)