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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Hydrogen: molecular weight 2 x 1.008 = 2.016 so it is about half the weight of the next heaviest element Helium which has a molecular weight = atomic weight of 4.003. Hydrogen is
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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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The very first periodic table of elements was created by Antoine Lavoisier in the year of 1789. This person first created the table of elements by listing the first 33 chemical elements
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The Lanthanides and the Actinides, They are only there to save space.
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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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The lightest element is hydrogen, signified by an "H," with an atomic weight of 1.008. It is the first element on the periodic table of elements ...
There are 118 known elements on the periodic table. The most recently discovered element, Ununoctium, was first reported by Russian scientists from Dubna in 2002 ...
Elements in the periodic table are presented in order of increasing atomic number. The atomic number is also the number of protons. The rows are called periods ...
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