共价键(Covalent bonding) 共价键,也称为分子键,是一种化学键,它涉及到原子间电子对的共享。这些电子对被称为共享电子对或成键电子对。当共享电子时,原子之间的吸引力和排斥力的稳定平衡,被称为共价键。共价键有三种: 单键、双键和三键(single, double, and triple bonds)。一个单键由两个成键电子组成。自然...
Api bond (π bond)is acovalent bondformed between two neighboringatom'sunbonded p-orbitals. An unbound p-orbitalelectronin one atom forms an electron pair with a neighboring atom's unbound, parallel p-orbital electron.This electron pairforms the pi bond. Doubleand triple bonds between atoms are...
Write the Lewis structures for the two molecules. How are single, double, and triple bonds similar? How do they differ? Selected Answers Glossarydouble bond: covalent bond in which two pairs of electrons are shared between two atomsfree radical: molecule that contains an odd number of electrons...
Relate the concept of resonance to ππ-bonding and electron delocalization The hybrid orbital model appears to account well for the geometry of molecules involving single covalent bonds. Is it also capable of describing molecules containing double and triple bonds? We have already discussed that mult...
As a general rule, a double bond consists of one sigma bond and one pi bond and a triple bond consists of one sigma bond and two pi bonds. Because pi bonds are generally weaker, double bonds will be stronger than single bonds, but the total strength will be less than twice the strengt...
Within the aliphatic hydrocarbons are three varieties: those that form single bonds (alkanes), double bonds (alkenes), and triple bonds (alkynes.)ALKANES. The alkanes are also known as saturated hydrocarbons, because all the bonds not used to make the skeleton itself are filled to their ...
Single bonds, double bonds, and triple bonds have 2, 4, and 6 shared electrons, respectively Chlorofluorocarbons rise to the stratosphere and interact with UV to produce free radicals that destroy ozone Which product of the ultraviolet decomposition of CFCs acts as the catalyst for ozone decompositi...
Double bonds shorter bond than single bond, 2 shared electrons, more energy contained, more energy required to break Triple bonds 3 shared pairs, shorter than double bonds, most contained energy resonance variations in double and triple bonding small nonpolar molecules weakest IMF London Dispersion Oc...
The metathesis of carbon–carbon double bonds is an important tool in organic synthesis and now a similar reshuffling has been carried out with heavier alkene analogues featuring unsymmetrically substituted Ge=Ge double bonds. This reaction enables the synthesis of symmetric molecular digermenes as well...
Homometallic examples are found in spectroscopic or fullerene-confined species, and heterometallic variants exhibiting a polar covalent σ bond supplemented by up to two dative π bonds are more prevalent. Hence, securing polar covalent actinide double and triple metal–metal bonds under normal ...