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Helium
Wiki User
∙ 13y ago
Helium is the second lightest element on the Periodic Table, with an atomic number of 2 and an atomic weight of approximately 4.0026 Atomic Mass units.
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What is the 1st element?
Hydrogen is the "lightest" element.
Which of these is the lightest chemical element?
Hydrogen is the lightest chemical element. It has an atomic number of 1 and is the most abundant element in the universe.
What element is lightest the elements?
The lightest element of all should have the lightest atomic mass. It is hydrogen-1 isotope. This atom has only one proton and no neutrons.
What element is the most lightest and most abundant element in the universe?
Hydrogen is the lightest and most abundant element in the universe. About 75% of normal matter in the universe is hydrogen.
The lightest known element with only one proton is?
The lightest known element with only one proton is hydrogen. It is the most abundant element in the universe and serves as the building block for all other elements.
Is Neon a nonreactive element?
Yes, it is after helium the 2nd lightest noble gas.
Is carbon the lightest element?
No hydrogen is the lightest element.
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 is the lightest known element with only one proton?
Hydrogen is the lightest element.
What is the lightest element oxygen helium neon or hydrogen?
hydrogen is the lightest element
Which is the lightest element known is?
The lightest element known is hydrogen. It is the first element in the periodic table and has an atomic number of 1, making it the simplest and lightest element in the universe.
What is the lightest element in the universe?
Hydrogen is the lightest element in the universe, with a single proton and one electron in its nucleus.
Is oxygen the lightest element on the periodic table?
No, hydrogen is ?the lightest element in the periodic table.
What is the lightest element with only one proton?
The lightest element with only one proton is hydrogen.
What is the lightest reactive element?
Hydrogen is not only the lightest element of all, it is also very reactive.
What is the 1st element?
Hydrogen is the "lightest" element.
What is the lightest artificial element?
The lightest artificial isotope is hydrogen-3, also called "tritium". The lightest element that has no naturally occurring isotopes is technetium.
