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Roman numerals

Roman numerals   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...I = 1, V = 5, X = 10, L = 50,C = 100, D = 500, M = 1000. Roman numerals are used in science for several purposes, including: 1. Numbering a series of objects, such as the satellites of a planet. 2. Specifying the *oxidation number of a compound (in small capitals following the name of an element, etc., within parentheses with no space); e.g. copper( ii ) sulphate, chlorate( v ) ion. 3. Specifying the state of ionization of a z -fold ionized atom ( z = 0,1,2,…) (in small capitals, preceded by a thin space) corresponding to z  + 1; e.g. H  i , Al ...

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