III. Atomic Structures

III-I. Number of protons, neutrons, electrons and mass numbers

1. For ³⁵Cl, determine the
   
   mass number:
   number of protons:
   number of electrons:
2. For ⁴⁴Ca²⁺, determine the
   
   number of protons:
   number of neutrons:
   number of electrons:
3. For ⁸¹Br^-, determine the
   
   number of neutrons:
   number of electrons:
   number of protons:
4. For ²⁰⁶Pb, determine the
   
   number of electrons:
   number of neutrons:
   mass number:

Rosamaría Fong, Instructor of Chemistry,
British Columbia Institute of Technology, Burnaby, B.C. Canada.

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Rosamaría Fong, Instructor of Chemistry
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