silicon atom
collocation in Englishmeaningsofsiliconandatom
These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withatomorsilicon.
silicon
noun[U]
uk/ˈsɪl.ɪ.kən/us/ˈsɪl.ə.kən/
a grey chemical element that is found in rocks and sand and is used in making computers and other ...
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atom
noun[C]
uk/ˈæt.əm/us/ˈæt̬.əm/
the smallest unit of any chemical element, consisting of a positive nucleus surrounded by negative electrons. Atoms can combine to form ...
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(Definition ofsiliconandatomfrom theCambridge English Dictionary© Cambridge University Press)
Examplesofsilicon atom
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
Asiliconatomhas four electrons in the valence band; phosphorus has five such electrons, and boron three.
From theCambridge English Corpus
Monolayers can be made on bare silicon transducer surfaces with the help of covalent bonds betweensiliconatomand the double bonds of undecylenic acid.
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For example 3-silylhexasilane and its higher homologues are chiral due to their stereogenic center atsiliconatomnumber three.
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For example, the pure semiconductor silicon has four valence electrons which bond eachsiliconatomto its neighbors.
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Many of these are based on a central tetrahedralsiliconatom, and some are optically active when central chirality exists.
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Secondary carbocations are inherently unstable, however the -silicon effect from thesiliconatomstabilizes the carbocation.
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In their report, the chemists observed that the hydroxyl group was introduced exclusively onto the carbon atom to which thesiliconatomwas attached.
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It is a silane, with asiliconatombonded to two methyl groups, a chlorine atom, and a hydrogen atom.
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There are 28 atomic sites in the unit cell, which are assigned to 3 scandium atoms, 24 boron atoms and onesiliconatom.
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Corriu and coworkers suggested that greater electropositive character at the pentavalentsiliconatommay be responsible for its increased reactivity.
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The alpha-silicon effect is the destabilizing effect of asiliconatomnext to a reaction center with a partial positive charge.
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This nucleophile attacks thesiliconatomin a nucleophilic displacement with the methylene group as the leaving group.
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In organopolysilazanes, at least one organic substituent is bound to thesiliconatom.
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It has a spinel-type structure in which two silicon atoms each coordinate six nitrogen atoms octahedrally, and onesiliconatomcoordinates four nitrogen atoms tetrahedrally.
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Thesiliconatommakes a direct -bond with one of the carbons of the cyclopentadienyl group.
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In this tetrahedrane the cage is protected by 4 so-called super silyl groups in which asiliconatomhas 3 tert-butyl substituents.
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The tetrahedral are made up of 4 oxygen atoms which occupy the summits surrounding either 1siliconatomor an aluminium atom placed in the center.
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In polysilazanes, eachsiliconatomis bound to two nitrogen atoms and each nitrogen atom to at least two silicon atoms (three bonds to silicon atoms are also possible).
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They are kinetically labile, with their decomposition reaction rate increasing with increases in the number of silicon atoms in the molecule.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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