Educational worksheet for learning atomic structure, including particle charges, atomic numbers, and isotope calculations.

Atomic Structure Worksheet with questions on particles, charges, atomic number, and isotopes.

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1. Proton, Positive, +1
Neutron, Neutral, 0
Electron, Negative, -1

2. positive, protons, neutrons

3. electron cloud (or orbitals/shells), negative

4. atomic number (or identity/element), chemical properties (or reactivity)

5. protons, electrons, same

6. Be, 4
F, 9
Mg, 12
S, 16
Co, 27
Sn, 50
As, 33
Au, 79

7. K, 19
Ar, 18
Ca, 20
Cr, 24
Cd, 48
Pb, 82

8. Cs-133, 78
Fe-54, 28
Ru-106, 58
Ni-58, 30
Po-209, 125
I-135, 82
In-115, 66
P-31, 16

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