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Bond energy + and

When widely separated, atoms do not interact with each other at all, so potential energy is zero. [Pg.257]

As atoms approach each other they begin to interact and the potential energy decreases. Attractive interactions lower the potenial energy. [Pg.257]

The amount by which the energy is iowered by this interaction is called the bond energy. [Pg.257]

When atoms are widely separated, their electron clouds are not distorted by the presence of the other atom and are spherical. [Pg.257]

FUNDAMENTALS OF COVALENT BONDING Chemical Bonds and Energy [Pg.150]

A covalent bond is one that joins 2 atoms through the sharing of 1 or more pairs of electrons between them. Covalent bonds were discussed briefly in Chapter 1. [Pg.150]

Cloud of negative charge formed by 2 rapidly moving electrons [Pg.151]

The simplest such bond to visualize is that which forms between 2 hydrogen atoms, to yield a diatomic molecule of hydrogen, Hj  [Pg.151]

F ure 43. Relationship between energy and distance between hydrogen nuclei (energy diagram of Hj). The midd are shown at the most aiergetically favored distance art, that is, the bond Imgth of the Hj atom. [Pg.151]


Fig. 10.1 Energy required (E1 and E2) to break bonds and energy released (E3 and E4) when forming bonds (EA activation energy). Fig. 10.1 Energy required (E1 and E2) to break bonds and energy released (E3 and E4) when forming bonds (EA activation energy).
Ohno TR, Chen Y, Harvey SE, Kroll GH, Weaver JH, Haufler RE, Smalley RE (1991) C60 Bonding and Energy-Level Alignment on Metal and Semiconductor Surfaces, Phys Rev B 44(24) 13747-13755... [Pg.560]

Table 19.4 Length (A) of the C2-C3 bond and energy of jt-jt and n-a (E(2), kcal/mol) interactions derived from NBO theory in molecules 2-8 [49]... Table 19.4 Length (A) of the C2-C3 bond and energy of jt-jt and n-a (E(2), kcal/mol) interactions derived from NBO theory in molecules 2-8 [49]...
A closely related statement of the correlation of energy barriers with heats of reaction is known as the Bell-Evans-Polanyi (BEP) principle (equation 6.69). ° Note that the BEP principle is concerned with the activation energies, while the Hammond and Leffler postulates are concerned with the structures of transition states. Of course, bonding and energy are inherently related, so the Hammond-Leffler postulate and the Bell-Evans-Polanyi principle are complementary. [Pg.363]

Production Heat of Reaction Bonds and Energy Heats of Reaction for Some Specific Reactions... [Pg.343]


See other pages where Bond energy + and is mentioned: [Pg.61]    [Pg.112]    [Pg.123]    [Pg.124]    [Pg.124]    [Pg.140]    [Pg.66]    [Pg.237]    [Pg.161]    [Pg.221]    [Pg.440]    [Pg.3019]    [Pg.328]    [Pg.353]    [Pg.247]    [Pg.33]    [Pg.51]    [Pg.51]    [Pg.52]    [Pg.54]    [Pg.56]    [Pg.58]    [Pg.60]    [Pg.62]    [Pg.64]    [Pg.66]    [Pg.68]    [Pg.70]    [Pg.529]    [Pg.340]    [Pg.256]    [Pg.366]    [Pg.181]    [Pg.51]    [Pg.51]    [Pg.52]    [Pg.54]    [Pg.56]    [Pg.58]    [Pg.60]    [Pg.62]    [Pg.64]    [Pg.66]   


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Endothermic reaction and relation to bond energies

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Exothermic reaction and relation to bond energies

Forces and Potential Energy in Molecules Formation of Chemical Bonds

Homolytic and Heterolytic Bond Dissociation Energies

Hydrogen bonding and cohesive energy

Ionic Bonding Lewis Symbols and Lattice Energies

Nitrogen Charges and Bond Energies

One-electron energies and bond energy trends

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