From gaseous elements Helium is the 2nd lightest.
From solid elements Potassium is the 2nd lightest.
From liquid elements Mercury is the 2nd lightest AND heaviest.
(only two liquid elements: Bromium is the lightest)
The electron is considerably lighter than the proton, which is slightly lighter than the neutron. If that's all the candidates you were expecting, you can stop there; the answer is the proton.
Under the standard model, the gluon and photon are tied for lightest particle, since they both have zero mass (the graviton, if it exists, also has zero mass, making it a three-way tie). The lightest particle following that tie would probably be the up quark.
Magnesium
helium
Lithium. Li
Helium
Flourine(F)
Hydrogen is the "lightest" element.
Helium
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.
The lightest and most abundant element in the entire Universe is hydrogen. Hydrogen has an atomic mass of nearly one.
Hydrogen is the lightest chemical element; the chemical symbol is H.
Flourine(F)
Helium but it is noble gas. Lithium is the lightest solid element that found in natural form.
who are you have you ever looked at the periodic table of elements? Hydrogen is the lightest element while helium is the second lightest element. No.
Helium is the second lightest element and the second most abundant element in the observable universe.
helium
No hydrogen is the lightest element.
Hydrogen is the lightest chemical element. -see the attached link for more info.
Hydrogen is the lightest element.
hydrogen is the lightest element
Hydrogen. It is the lightest element in the known universe.
No, hydrogen is ?the lightest element in the periodic table.