1. What does the structure of the periodic table primarily represent?
2. What is the pattern of filling electron shells in an atom according to the Bohr model?
3. What is the primary role of valence electrons in an atom?
Periodic table — structure?
Organized by atomic number in periods and groups.
Period — definition?
Horizontal row with increasing atomic number.
Group — definition?
Vertical column with similar properties.
Atomic number — role?
Number of protons, identifies element.
Electron shells pattern — rule?
Fill 2, 8, 8… electrons per shell.
Valence electrons — location?
In the outermost shell.
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