atomic weight

Noun

Meaning

(chemistry) the mass of an atom of a chemical element expressed in atomic mass units

Source: WordNet

Synonyms

atomic mass relative atomic mass atomic number molecular weight mass number atomic mass unit elemental mass isotopic mass molar mass elemental weight gram atomic mass average atomic mass relative isotopic mass atomic composition standard atomic weight

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Hypernyms

mass

Hyponyms

equivalent eq equivalent weight combining weight meq milliequivalent

Examples

It has long been known that the chemical atomic weight of hydrogen was greater than one-quarter of that of helium, but so long as fractional weights were general there was no particular need to explain this fact, nor could any definite conclusions be drawn from it. Francis William Aston

The magnitude of the atomic weight determines the character of the element, just as the magnitude of the molecule determines the character of a compound body. Dmitri Mendeleev

We must expect the discovery of many as yet unknown elements-for example, elements analogous to aluminum and silicon- whose atomic weight would be between 65 and 75. Dmitri Mendeleev

Experimental work of great refinement is necessary in order to determine atomic weights. No relationships between them have yet been certainly found which make it possible for us to compute by any sort of calculation exactly the value of any one atomic weight from any other. Theodore William Richards

Adopting better data, in 1806 he concluded that the atomic weight of oxygen must actually be 7 rather than 5.5, and he retained this weight for the rest of his life. Source: Internet

Dmitri Mendeleev claimed that he arranged his first periodic tables in order of atomic weight ("Atomgewicht"). Source: Internet

Close letter words and terms

atomic waste atomic weapon atomic wedgie atomic weight 118.71 atomic weight 140.90765 atomic weight 183.84