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The first four are (in order of increasing number / mass:
He = Helium, Ne = Neon, Ar = Argon, Kr = Krypton
Xe = Xenon and Ra = Radon are the other two noble gases
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Is He a noble gas?
Yes. It is the first of the noble gases, or group 18.
What is the first member of the noble gases?
Helium
Periodic table what was missing at first?
the noble gases
What happens when two noble gases are combined?
Noble gases do not react chemically with other noble gases.
What are the noble gases in Column 18 called?
inert gases / noble gases
What were noble gases first called?
inert gases
Is He a noble gas?
Yes. It is the first of the noble gases, or group 18.
What is the first member of the noble gases?
Helium
What is the first element in the noble gases family?
helium
Periodic table what was missing at first?
the noble gases
The elements that do not ordinarily form compounds are?
Noble gases do not normally form compounds.
What happens when two noble gases are combined?
Noble gases do not react chemically with other noble gases.
What are the noble gases in Column 18 called?
inert gases / noble gases
What state are noble gases at room temperature?
Gases, hence noble "gases"
What are the elements in Group 17-18 called?
The Group 18 elements are called the noble gases or sometimes inert gases. Wikipedia has information on the noble gases, and a link is provided.
How are noble gases different than noble gases?
it's not
How active is noble gases?
Noble gases are chemically inert.
