Gram-Atom
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
This article from the 1928–1936 Soviet Medical Encyclopedia defines the gram-atom as the quantity of an element in grams numerically equal to its atomic weight. It provides examples such as oxygen and hydrogen to illustrate how atomic weights expressed in grams constitute one gram-atom of the respective element.
Encyclopedia entry (1928–1936)
GRAM-ATOM, the number of grams of a given element equal to its atomic weight; for example, the atomic weight of oxygen is 16—an abstract number expressing the ratio of the weight of an oxygen atom to the weight of a hydrogen atom, taken as 1.008. If one takes 16 g of oxygen, this will be 1 gram-atom of oxygen. A gram-atom of hydrogen contains 1.008 g of hydrogen, a gram-atom of carbon contains 12 g of carbon, and so on.
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“Gram-Atom.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/gram-atom/