Hydrogen. It's first on the Periodic Table, with usually a sigle proton, and an atomic weight of 1.00794.
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.
Hydrogen is the smallest element. It has only 1 energy level. It is a gas element.
The symbol (He) comes from the first two letters of the word Helium
When hydrogen is fused in the suns core Helium is produced.
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No, Hydrogen is lighter than Helium. However, Helium is the 2nd lightest element with an atomic number of 2.
There are many, but one is Helium
Hydrogen is about 7 lighter 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.
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.
Because helium (He) is lighter than air and not flammable like Hydrogen (H) which is the lightest element.
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.
No, helium is almost 4 times as heavy as hydrogen.
Helium is heavier than hydrogen. Hydrogen is the lightest and simplest element in the periodic table, while helium is the second lightest element.
Under the same conditions of pressure and temperature, any volumeof hydrogen weighs less than an equal volume of helium.
hydrogen
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.