By Anthony Craig Fischer-Cripps
ISBN-10: 1439830886
ISBN-13: 9781439830888
Just like the author’s different significant other books, The Chemistry Companion provides-high caliber info in particular one-page-per-topic displays that don't overburden and distract with over the top info. The booklet bargains concise summaries of common chemistry recommendations, simply obtainable in a handy, reader-friendly format.
Suitable as an creation or examine advisor, this better half offers the minimal of what readers want to know to appreciate the topic. It emphasizes the physics underlying chemistry. by way of taking a look at chemistry techniques from a physics perspective, readers can larger get pleasure from what's occurring from the chemical viewpoint that's frequently present in conventional chemistry books.
The writer makes a speciality of the constitution of subject, chemical elements and bonds, the periodic desk, states of topic, thermodynamics, response charges, carbon chemistry, biochemistry, and chemical, ionic, and digital equilibria. each one subject is roofed in a single-page define layout with barely enough element to let a very good knowing of the subject.
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Additional resources for The Chemistry Companion
Sample text
H Tetrahedral H H .. .. Si Cl T t h d l Tetrahedral Cl Cl .. N Pyramidal H H O H Bent H H 4 4,4 .. H O O H .. 4,4 .. 14 Linear F C H H H .. C H .. H .. H2O2 H .. H C .. H .. 14 H .. H N H .. H .. C2H6 Ethane .. 8 .. .. 4 .. NH4+ F Cl .. O H .. H .. 8 4 4 .. H2O Water Note H .. H N H .. H .. 8 Shape - 4 .. NH3 Ammonia .. 32 N .. Cl .. Si Cl .. Cl .. Cl .. SiCl4 .. .. .. F F .. 14 .. CH4 Methane Lewis formula N H H H C T t h d l Tetrahedral H H H H 2 tetrahedral C H H O O F2 Fluorine gas Total No.
E . Lewis recognised that bonding or o sharing of electrons occurred so that an elemeent tended to acquire eight valence electrons (noble gas present a bond configuration): the octet rule. To rep b between two atoms, a Lewis L i structurre is i written i so as to indicate the position of the valen nce electrons: Group . X .. .. Molecules and compounds form wheen bonds exist between atoms involving the transferr or sharing of valence electrons. The Lewis symbool for an atom is the element symbol surrounded by dots that represent the possible valence electtrons for the atom.
When hybridization occurs, the rearraangement of electrons often results in there being more unpaired valence elecctrons than there were originally. 5. In PCl5 (more than eight electrons bonded), the hybrid orbitals are sp3d. H H In the double C=C bond of C2H 4 onee of the bonds is the end-to-end overlap of onee of the sp2 hybrid orbitals (this is called the sigma C bond) along the line of the two C atom ms (the 2p 1s 2sp2 2 other two sp orbitals overlap with the s orbitals of the H atoms), while the other o C C bond is formed by the side-by-side oveerlap of the unhybridised (dumbbell shapeed) 2p orbitals parallel to the plane of the C and H H H atoms (this is called the pi bond).
The Chemistry Companion by Anthony Craig Fischer-Cripps
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