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A basic animation[1] of hydrogen, symbol H, an atom comprised of one proton (enlarged in size), the central part, and one electron, shown orbiting.

In chemistry, hydrogen (TR:291) (LH:24) (TL:315), symbol H, the first element of the periodic table (Z:1), with a mass of 1.008 amu, comprised of one proton and one electron, with an electron configuration of: 1s1.


See main: Elemental composition of humans; Thims periodic table

The following is an early estimate of the percent hydrogen in humans:

“The human body contains carbon 13.5%, hydrogen 9.1%, oxygen 72%, nitrogen 2.5%, phosphorus 1.15%, sodium 0.1 %, calcium 1.3%, magnesium 0.001%, iron 0.01%, and traces of silicon and fluorine.”
— Carl Kelsey (1916), The Physical Basis of Society (pg. 7) [2]

Presently, it is known that in humans, hydrogen is the 3rd most dominant element, by mass composition (10% mass), of the 26-elements in the standard human molecular formula.[3]


The following are related quotes:

“Why should a group of simple, stable compounds of carbon (C), hydrogen (H), oxygen (O), and nitrogen (N), 'struggle' for billions of years to organize themselves into a professor of chemistry? What's the motive?”
Robert Pirsig (1991), Lila: an Inquiry into Morals (pg. 162) [4]
Hydrogen is a light, odorless gas, which, given enough time, turns into people.”
John Wiley (1995), “Phenomena, Comments, and Notes”, Smithsonian Magazine, Dec [5]


  1. Hydrogen – Wikipedia Commons.
  2. Kelsey, Carl. (1916). The Physical Basis of Society (pg. 7). D. Appleton and Company.
  3. Thims, Libb. (2008). The Human Molecule (GB) (Amz) (Iss) (elemental composition table, pgs. 52-55). LuLu.
  4. Pirsig, Robert M. (1991). Lila: An Inquiry into Morals (struggle, 5+ pgs; quote, pg. 162). Random House, 2013.
  5. Wiley, John P. (1995). “Phenomena, Comments & Notes: Today’s physics allow outrageous possibilities: faster-than-light travel across the galaxy, or even our learning to make new universes to specification” (WB), Smithsonian Magazine, Dec.

External links

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