What are the columns on a periodic table of elements called?
Quick Answer
The columns on the periodic table of elements are called groups. The elements in a group share the same configuration of valence electrons, which gives the elements similar chemical properties. The number of valence electrons in a group is sometimes represented with a Roman numeral above the column.
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Group IA of the periodic table consists of the alkali metals. These elements have one valence electron which is easily lost, making these elements highly reactive. Group VIIA consists of the halogens, which are highly reactive non-metals. The halogens have seven valence electrons and are especially prone to forming compounds with the alkali metals. Group VIII contains the noble gases which are all relatively inert. These gases have a full outer electron shell, which causes them to be stable and non-reactive.
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Q:
Where can you find a downloadable periodic table of the elements?
A: As of 2015, periodic tables of the elements can be downloaded from Los Alamos National Laboratory, Science Geek and WebElements. All three offer downloads ... Full Answer >Filed Under: -
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What are the Roman numerals on the periodic table?
A: The Roman numerals on a periodic table of elements define the chemical group of the elements in that column and identify the number of valence electrons of... Full Answer >Filed Under: -
Q:
How are the elements arranged in the modern periodic table?
A: In the modern periodic table, elements are arranged by atomic number. They are placed with the lowest atomic number first, and elements with increasing ato... Full Answer >Filed Under: -
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How does the periodic table work?
A: The periodic table classifies chemical elements by their similarities and properties. Each square in the periodic table shows an element's atomic number, i... Full Answer >Filed Under:
