At the top of the Periodic Table (starting left to right, so hydrogen being the lightest)
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.
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)
Hydrogen is the lightest of all elements and is extremely flammable. It is also the most plentiful gas in the universe.
The 4H is the lightest pencil.
Hydrogen is an element itself. It usually makes a covalent bond to make a hydrogen molecule. It is the lightest existing atom and compound respectively.
the lightest elements are gases and the lightest of these are hydrogen and helium.
Ask a scientist, they'll know.
helium
generally, you can look at the Periodic Table of Elements. hydrogen is the lightest of both
H=Hydrogen
Hydrogen is the lightest of all elements and is extremely flammable. It is also the most plentiful gas in the universe.
Metal is located throughout the periodic table. The periodic table is based on atomic weight. Metals range from some of the lightest to the heaviest of elements.
Hydrogen is the lightest of all elements. According to the Periodic Table, its atomic weight is 1.00794 u, even lighter than helium.
HydrogenHeliumLithium
Lithium.
Paleoclimatolinium;A form of hydrogen with no protons, neutrons....... only electron and cloud is present.hydrogenHydrogen is the lightest element in the Periodic Table.See the Related Questions link for more information about hydrogen.
Hydrogen is the lightest of all elements. According to the Periodic Table, its atomic weight is 1.00794 u, even lighter than helium.