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All About Atoms

Across
Electrons are found here
Positively charged particle in an atom's nucleus
6.02 X (10)23
Standard unit of mass also known as dalton
Particle in an atom's nucleus with no charge
Negatively charged particle found in the shell
Number of protons in a nucleus of an atom
Down
Positively charged ion
Negatively charged ion
Protons + Neutrons in a nucleus
An atom in the outer shell
A packet of light
Two atoms of the same element having different numbers of neutrons
Contains protons and neutrons