A group of 15 ra-dioactive elements whose electronic configu-rations display filling of the 5f level. As withthe lanthanoids,the first member,actinium,has no f electrons (Ac[Rn]6d17s2) but othermembers also show deviations from thesmooth trend of f-electr...[繼續(xù)閱讀]

    See charcoal參閱125頁(yè)charcoal。...[繼續(xù)閱讀]

    See transition state參閱589頁(yè)transi-tion state。...[繼續(xù)閱讀]

    A theory ofchemical reactions in which the rate at whichchemical reactions take place is related to therate at which the transition state (activatedcomplex) is converted into products.Activat-ed complex theory is sometimes known asTRANSITION STATE THEORY....[繼續(xù)閱讀]

    Symbol: Ea The mini-mum energy that a particle,molecule,ion,etc. must acquire before it can react; i.e.the energy required to initiate a reaction re-gardless of whether the reaction is exothermicor endothermic. Activation energy is oftenrepresented as an ...[繼續(xù)閱讀]

    See promoter參閱479頁(yè)promoter。...[繼續(xù)閱讀]

    See mass action,law of參閱365頁(yè)mass action,law of。...[繼續(xù)閱讀]

    1. Symbol: a A corrective con-centration or pressure factor introduced intoequations that describe real solvated systems.Certain thermodynamic properties of a solvat-ed substance are dependent on its concentra-tion (e.g. its tendency to react with othersu...[繼續(xù)閱讀]

    Symbol: f A measureof the degree of deviation from ideality of asolvated substance,defined as:符號(hào):f 用于衡量溶劑化物質(zhì)偏離理想狀態(tài)的程度。定義為:a=fca=fcwhere a is the activity and c the concentra-tion. For an ideal solute f=1; for real sys-tems f can be less or greater than ...[繼續(xù)閱讀]

    Describing a compound that is notcyclic (i.e. a compound that does not con-tain a ring in its molecules).脂肪族的 用于描述非環(huán)化合物(分子中不含環(huán)結(jié)構(gòu)的化合物)。...[繼續(xù)閱讀]