Bohr+Diagrams


 * To make sense of the periodic table and to understand how elements combine to make new substances, it is first necessary to study the elements themselves. We will study the first 18 elements with reference to their atomic numbers and their valence electrons.**

Activity One **Bohr Diagrams**


 * To create a Bohr Diagram, you must first answer the following questions:**


 * 1) What is the atomic number for this element?
 * 2) What is the atomic mass for this element?
 * 3) How many protons does this element have?
 * 4) How many neutrons does this element have? (How is this number calclulated?)
 * 5) How many electrons does this element have?
 * 6) To which family does this element belong?


 * [|This site] will help you to fill in the necessary information. Your teacher will give you a packet of information which we will complete in class together.

Check your diagrams with help from this site.**

of the First 18 Elements
 * Rules for Creating Bohr Diagrams

1. Write the number of protons and neutrons in the center of the diagram. 2. Add electrons from the inside orbital to the outside orbitals. 3. The first orbital contains only 2 electrons. 4. The rest of the orbitals contain 8 electrons. 5. In the outer orbitals, the first four electrons are spaced equally apart and the remaining electrons are paired with them. **

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