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The Group 1 elements other than hydrogen are called the alkali metals. The Group 1 elements are:
The Group 1 metals are all highly reactive silvery metals that are so reactive to air and moisture that they must be stored under an inert atmosphere or oil. They are all soft and can be cut easily with a knife.
Hydrogen is usually placed at the top of the Group but is not a Group 1 metal.
The electronic configuration of the elements all consist of a lone s-electron outside an inner core of electron corresponding to the previous inert gas.