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Hydrogen. It's first on the Periodic Table, with usually a sigle proton, and an atomic weight of 1.00794.
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Which is lighter - helium or hydrogen?
Hydrogen is lighter than Helium.
What is the lightest weight element that is not a gas?
The lightest element would be helium
When hydrogen fuses with hydrogen what new element does this produce?
When hydrogen is fused in the suns core Helium is produced.
What is the first element that is converted in a star's core?
Hydrogen into Helium.
Is lithium a pure element?
No - the lightest elements are hydrogen and helium. Although lithium is a lightest metal and the lightest element that is a solid at room temperature.
Is helium the lighest element?
No, Hydrogen is lighter than Helium. However, Helium is the 2nd lightest element with an atomic number of 2.
Which is lighter - helium or hydrogen?
Hydrogen is lighter than Helium.
Why helium gas is used in weather balloons but not hydrogen?
Because helium (He) is lighter than air and not flammable like Hydrogen (H) which is the lightest element.
A star is comprised mostly of what two elements?
H Hydrogen which is the lightest element that is highly flammable element and He Helium the second lightest element with no fire risk. This is why helium is used in making balloons than hydrogen which is much lighter than helium.
Is hydrogen lighter than helium?
No, helium is almost 4 times as heavy as hydrogen.
Why hydrogen gas is liquefied first than helium gas?
Because hydrogen is lighter that helium
What element is lighter than helium gas?
Under the same conditions of pressure and temperature, any volumeof hydrogen weighs less than an equal volume of helium.
What happens when hydrogen and helium mix?
Helium is completely inert, it is the most inert of all elements, and so it will not react in any way with hydrogen (or with any other element). So, if you mix hydrogen and helium, nothing happens. You have a mixture of hydrogen and helium. It's a lot lighter than air, you can make balloons that will float. Of course, you can do that with pure hydrogen or with pure helium, as well.
Which gas is lighter than helium?
hydrogen
Is helium lighter than air?
Yes, a mole of hydrogen weighs 1 g, a mole of helium weighs 4 g. Still lighter than air, as a mole of air weighs about 30 g.
Does hydrogen combine with helium?
No. helium does not react with any element.
What is a very light gas found in some balloons?
Helium is used in blimps and balloons. It is the second lightest element to hydrogen, which is not used because it is highly flammable.
