They are called groups. The classic form indicates the 18 groups as 1A, 2A, 3B, 4B, 5B, 6B, 7B, three columns as 8B, 1B, 2B, 3A, 4A, 5A, 6A, 7A, and 8A (or 0). The IUPAC renumbered the groups as simply 1 to 18 in 1990.
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The Noble Gasses
Noble Gases
chemistry
they represent elements. the elements in a given column (or group) have the same number of valence electrons and hence similar properties.
groups or family:))
hydrogen
All elements within a column are called a group.
sorry I don't know
chemistry
Elements in a given column have the same number of valence electrons and hence the similar properties.
they represent elements. the elements in a given column (or group) have the same number of valence electrons and hence similar properties.
A group is a column in the periodic table of elements.
a family is a column of elements a period is a row of elements
Representative elements
This is probably a reference to the periodic table of the elements, which has columns. All the elements in a given column have the same configuration of valance electrons. There is a column of noble gases, a column of halogens, etc.
The elements in a column on the periodic table form a group (or family) because they have similar physical and chemical properties.
the elements in a given column have the same number of electrons in their outermost shell and hence have similar chemical properties.
A column of elements in the periodic table is called a group or
groups