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In ion-exchange chromatography, the trade-off between this quantity and reaction kinetics arises after this quantity exceeds three. Molecules for which this quantity varies based on a binding partner’s molecular size are denoted “flexi-.” Different values for this quantity determine whether molecules follow the delta vs. lambda or fac vs. mer configuration schemes. (-5[1])This quantity equals two (-5[2])for each (-5[1])of the (-5[1])three donors (10[1]-5[1])in octahedral molecules (-5[1])during the Bailar and Ray–Dutt twists. (-5[1])Unlike a similar quantity, this quantity does not consider whether bound atoms are contiguous (-5[1])with each other. (10[1]-5[1])This quantity, which must be at least two for a metal (-5[1])to be chelated, (10[1])is equal to six for (10[1])EDTA. (10[3])For 10 points, (10[1]-5[2])name this quantity (-5[2])that is equal to the number of atoms a ligand can donate to a metal atom (10[1]-5[1])and that is often contrasted with (10[1])hapticity. ■END■ (10[12]0[1])

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