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One important function of atomic and ionic radius is in regulating the uptake of oxygen by haemoglobin, for the change in ionic radius that accompanies the conversion of $\mathrm{Fe}(\|)$ to $\mathrm{Fe}(\| \mathrm{I})$ when $\mathrm{O}_{2}$ attaches triggers a conformational change in the protein. Which do you expect to be larger: $\mathrm{Fe}^{2+}$ or $\mathrm{Fe}^{3+}$ ? Why?
Questions asked
Describe in your own works, one of the experiments that led to the concept that energy is quantized. What was measured and why did classical mechanics breakdown?
Identify the levels of the configuration f1.
Calculate the hydronium ion, H3O+, and hydroxide ion, OH− , concentrations for a 0.0239 M HCl solution.