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发表于 2025-3-27 00:21:13
Qualitative Valence-Bond Descriptions of Electron-Rich Molecules: Pauling “3-Electron Bonds” and “In978-3-642-93216-8Series ISSN 0342-4901 Series E-ISSN 2192-6603
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发表于 2025-3-27 03:50:12
Atomic Orbitals, Electron Spin, Linear Combinations,s book. In general, we shall state only the main results, without any derivation of them. Much, if not all of this material should be familiar to many readers. For fuller treatments, the reader should consult some of the numerous standard texts. on quantum mechanics and valence.
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Classical Valence Structures and Quinquevalent Nitrogen Atoms,e” structure is sometimes used to represent their electronic structures. Since the 1860’s and up until the introduction of the Lewis-Langmuir octet theory, nitrogen atoms were very often represented with valencies of 3 or 5 in valence-bond structures. For example, valence-bond structures for N.O, Me.NO, and N.O. were written as (1)-(3).
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发表于 2025-3-28 14:10:37
R. D. Harcourtreport of the World Commission on Environment and Development on ‘Our Common Future‘ (1987) has acted as a catalyst for a revival of the environmental awareness, not only regarding local and daily pollution problems, but also -and in particular- regarding global environmental decay and threats to a