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metamerism

n. 异性,体节性

异性,体节性

The Collaborative International Dictionary of English v.0.48 (gcide)

Metamerism \Me*tam"er*ism\, n.
1. (Biol.) The symmetry of a metameric structure; serial
symmetry; the state of being made up of metameres.
[1913 Webster]

2. (Chem.) The state or quality of being metameric; isomerism
due to different bonding patterns in two substances having
the same molecular formula. Contrasted with
{steroisomerism} or {optical isomerism}. Also, the
relation or condition of metameric compounds.
[1913 Webster]

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What is metamerism - Chemistry Stack Exchange
metamerism This term is generally applied to those cases if isomerism wherein compounds show identity of elementary composition, but belong to different types of classes (…) For example, it has long been a question whether ethylic acetoacetate is to be represented as $\ce{CH3-CO-CH2-CO2Et}$ or by the formula $\ce{CH3-C(OH)=CH-CO2Et}$
Which is the correct definition for metamers (or metamerism)?
There is no IUPAC definition for metamers or metamerism in the gold book (not even one that makes it obsolete), and Wikipedia doesn't even have a real article about it, see Metamerism In chemistry, the chemical property of having the same proportion of atomic components in different arrangements (obsolete, replaced with isomer)
what is metamerism - askIITians
The example below is how most remember this is the most commonly experienced form of metamerism Example: most people have experienced sample metamerism when putting on two socks that appeared to be black while in the bedroom (which may have incandescent lights), but later finding that one is black and the other is blue upon stepping into the
wat is metamerism? - askIITians
Metamerism in chemistry is the type of isomerism in which chemical compounds have identical proportions of the same elements and the same molecular weight, but have radicals differing in type or position, with resulting differences in chemical properties
terminology - Are primary, secondary, and tertiary amines considered . . .
Which is the correct definition for metamers (or metamerism)? 2 Identify the type of structural isomerism 0

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