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Technically Helium is classed as a Noble gas and has a MW of 4g/mol.

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9y ago
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13y ago

Helium, neon and argon are the three noble gases with the lowest atomic masses.
Helium, Neon and Argon

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8y ago

The lightest noble gas (weighs the least) is Helium, with atomic mass of 4 amu.

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9y ago

He has least Atomic Mass.Relative atomic mass is 2.

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8y ago

Helium is the lightest noble gas.It is represented by symbol He.It has atomic number 2.

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8y ago

It is one on the top. That is gas Helium

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12y ago

Helium

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13y ago

Radon.

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14y ago

helium

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11y ago

Helium!

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Q: What are the three lightest noble gases?
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Related questions

What are the 3 lightest members of the noble gases?

Helium, neon, and argon are the three lightest members of the noble gases.


What element is the light es of them all?

the noble gases would be the lightest, as they are all gases


Heaviest of the noble gases?

Radon is the heaviest of the inert gases. The inert gases are also known as the noble gases and are the lightest elements.


What are the lightest elements?

the lightest elements are gases and the lightest of these are hydrogen and helium.


Is it true All of the noble gases have at least three electron shielding layers?

No. He the lightest has only one 1s2. Neon is 1s2 2s2 2p6 so depending what you understand by the term layers - it either has two (complete shells) or three.


Do all noble gases have eight valence electrons?

Yes, except for helium which only two electrons. All noble gases are found under the noble gas family to the far right of the periodic table.


Do all noble gases have at least three electron sheilding layers?

No. The first three noble gases (helium, neon and argon) have 1, 2 and 3 energy levels respectively.


Do noble gases have a maximum number of electrons in their outer energy level?

Yes they do, because, for example, neon has 2 electrons in its inner shell and 8 on its outer shell; these shells are both full. Helium, the lightest of the noble gases, has only 2 electrons, but that completes it only shell. All the other noble gases have 8 electrons in their outer shell, which is a stable arrangement.


What are three compounds of noble gases?

Examples: XeF2, XeO3, XeOF2.


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