A manual of chemistry, inorganic and organic : inorganic and organic, with an introduction to the study of chemistry / by Arthur P. Luff.

  • Arthur P. Luff
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: A manual of chemistry, inorganic and organic : inorganic and organic, with an introduction to the study of chemistry / by Arthur P. Luff. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    Graphic Representation of the Quantivalence OR Atomicity op the Elements. The quantivalence of an element may be repre- sented graphically by fixing to its symbol arms corre- sponding in number to the degree of its atom-fixing power. A monad is represented as possessing one arm, a dyad as possessing two arms, a triad as possess- ing three arms, and so on ; thus : Monad _ - H — It is scarcely necessary to caution the student against supposing that elements actually have arms projecting from them ; all that we know is that such an element as oxygen possesses twice the atom-fixing ])0wer of hydrogen, and the graphic symbols serve the purpose of showing how one atom of oxygen is capable of uniting with two atoms of hydrogen ; they represent in a manner that at once appeals to the mind of the