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Because the Periodic Table goes by atomic number, and they all happen to line up at the end of the table.
In more detail, the chemical properties and electron configurations of the elements determine the arrangement. The noble gasses all have a full valence shell, so they are placed at the end of the table to indicate.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoElement Name: Radon.
Chemical Symbol: Rn.
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Which side of the periodic table contains noble gases?
right side, last group (or last column). Noble gases are group 18 elements.
What group of the region shown on the periodic table contains mostly elements that are gases at room temperature?
The so-called noble or inert gases are in Group 18, the last group on the right of the periodic table of the elements.
Why does each period in the periodic table end with a noble gas?
Because noble gases are in the last column
What is the noble gas group?
Noble gases are in group 8A; the last column in the periodic table.
Are the noble gases stable or unstable?
All noble gases are stable except the last one, i.e. Radon(Rn)
Which side of the periodic table contains noble gases?
right side, last group (or last column). Noble gases are group 18 elements.
What group of the region shown on the periodic table contains mostly elements that are gases at room temperature?
The so-called noble or inert gases are in Group 18, the last group on the right of the periodic table of the elements.
Why does each period in the periodic table end with a noble gas?
Because noble gases are in the last column
What is the placement of the noble gases and why?
The last column of the periodic table of elements
What are the noble gases on the periodic table?
The very last row on the right
The elements that do not ordinarily form compounds are?
Noble gases do not normally form compounds.
What is the noble gas group?
Noble gases are in group 8A; the last column in the periodic table.
Are the noble gases stable or unstable?
All noble gases are stable except the last one, i.e. Radon(Rn)
What happens when two noble gases are combined?
Noble gases do not react chemically with other noble gases.
What section are noble gases in on the periodic table?
The very last row on the right
What element helps light bulbs last longer?
argon or noble gases
Where are the noble gases located on the periodic table and what does their position reveal about their reactivity?
the noble gases are positioned on the last column on the right. As the elements descend down the column they are more reactive
