What Is the Lightest Element on the Periodic Table?

Answer

The lightest element in the periodic table is Hydrogen with one proton in its nucleus and an atomic weight of 1.0079 grams per every mole of atoms. The hydrogen element has atomic number 1 and is represented by the symbol H. It is also the most plentiful chemical element, constituting approximately 75% of the Universe's chemical basic mass.
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Oxygen (mass 15.999)
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Helium is the second lightest element, weighing at
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Hydrogen has two stable isotopes. The answer depends on your definition of isotope: There is only one form of fluorine and it's stable. Some definitions would say that there are no
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Hydrogen is the lightest and the most plentiful element in the universe. Hydrogen, denoted by the symbol H, has an atomic number of one and joins with many other elements to produce
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1 Additional Answer
Ask.com Answer for: what is the lightest element in the periodic table
The Periodic Table of Elements
Dmitri Mendeleev generally is credited with the creation of the first periodic table, which charts the chemical elements by atomic number and valence shell electron configuration.
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