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Hydrogen. It's first on the Periodic Table, with usually a sigle proton, and an atomic weight of 1.00794.
What else can I help you with?
Which is lighter - helium or hydrogen?
Helium is lighter than hydrogen. Helium has an atomic number of 2, which means it has two protons and two neutrons in its nucleus, making it lighter than hydrogen, which has only one proton in its nucleus.
Which element is smaller?
Hydrogen is the smallest element. It has only 1 energy level. It is a gas element.
Why is helium's symbol He and not H?
The symbol (He) comes from the first two letters of the word 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 ligther helium or oxygen?
Helium---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
Is helium the lighest element?
No, Hydrogen is lighter than Helium. However, Helium is the 2nd lightest element with an atomic number of 2.
What element is lighter than air?
There are many, but one is Helium
How much lighter is hydrogen compared to helium?
Hydrogen is about 7 lighter than helium.
What type of element is better than helium?
In terms of buoyancy, hydrogen is better than helium because it is lighter. However, hydrogen is flammable, so helium is typically preferred for safety reasons.
Which is lighter - helium or hydrogen?
Helium is lighter than hydrogen. Helium has an atomic number of 2, which means it has two protons and two neutrons in its nucleus, making it lighter than hydrogen, which has only one proton in its nucleus.
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.
Which is heavier hydrogen or helium?
Helium is heavier than hydrogen. Hydrogen is the lightest and simplest element in the periodic table, while helium is the second lightest element.
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.
Which gas is lighter than helium?
hydrogen
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.
