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The elements to the left of the stairs in the periodic table are called metals. However, within metals you have different families as it is indicated in the periodic table in the image below: Was this helpful?
Now you know about periods going left to right. The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements. Every element in the first column (group one) has one electron in its outer shell.