Search results
Results From The WOW.Com Content Network
The octet rule is a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas. The rule is especially applicable to carbon, nitrogen, oxygen, and the halogens; although more generally the ...
conclusion: Methane follows the octet-rule for carbon, and the duet rule for hydrogen, and hence is expected to be a stable molecule (as we see from daily life) H 2 S, for the central S; neutral counting: S contributes 6 electrons, each hydrogen radical contributes one each: 6 + 2 × 1 = 8 valence electrons
In 1960, Linnett originated a modification to the octet rule, originally proposed by Lewis, concerning valence electrons. He proposed that the octet should be considered as a double quartet of electrons rather than as four pairs, and hence the theory became known as "Linnett double-quartet theory". Using this method, he was able to explain the ...
On the other hand, some compounds that are normally written with ionic bonds in order to conform to the octet rule, such as ozone O 3, nitrous oxide NNO, and trimethylamine N-oxide (CH 3) 3 NO, are found to be genuinely hypervalent. Examples of γ calculations for phosphate PO 3− 4 (γ(P) = 2.6, non-hypervalent) and orthonitrate NO 3−
The history of chemistry represents a time ... Markovnikov's rule was an early example of regioselectivity in organic synthesis and the modern ... (an "octet"). Lewis ...
Satisfy the octet rule. Both oxygen atoms currently have 8 electrons assigned to them. The nitrogen atom has only 6 electrons assigned to it. One of the lone pairs on an oxygen atom must form a double bond, but either atom will work equally well. Therefore, there is a resonance structure. Tie up loose ends.
A lot of U.S. history is too good to be true — and actually is not. Sometimes fact is ignored, or teachers miss the latest, and these tales are examples.
In chemistry, electron deficiency (and electron-deficient) is jargon that is used in two contexts: chemical species that violate the octet rule because they have too few valence electrons and species that happen to follow the octet rule but have electron-acceptor properties, forming donor-acceptor charge-transfer salts.