Gold leaching in an aerated cyanide solution takes place according to the reaction: au+8cn22h20-4au(cn)2+4oh assume that the mass transfer of dissolved oxygen to the gold surface controls the rate. calculate the initial rate (g s) of dissolution of a spherical 100 μm (diameter) gold particle suspended in an aerated solution containing excess cyanide, atomic mass: o- 16, au- 197 concentration of dissolved oxygen in water 8 mg l mass transfer coefficient for a 60 μm gold particle 1 x 10-3 cm s-1

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.

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